五年级小数乘除法50道(五年级数学小数的乘除法)
五年级小数乘除法50道(五年级数学小数的乘除法)

五年级简算计算题乘除法,急急急!

小数乘除法计算题2010-02-07 09:24乘法:

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

1.1/3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

18.(43*20%)+(3*(1/9))

19.27*(9*(1/3))*5%

20.14*15%+25*8*(1/4)

21.7*(1/2)/49

22.(1+48%)*2

23.(4*8-12)*50%

24.(48/60%)/10

25. 63*(1/7)*30%

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9](1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9]

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

1.125*3+125*5+25*3+25

2.9999*3+101*11*(101-92)

3.(23/4-3/4)*(3*6+2)

4. 3/7 × 49/9 - 4/3

5. 8/9 × 15/36 + 1/27

6. 12× 5/6 – 2/9 ×3

7. 8× 5/4 + 1/4

8. 6÷ 3/8 – 3/8 ÷6

9. 4/7 × 5/9 + 3/7 × 5/9

10. 5/2 -( 3/2 + 4/5 )

11. 7/8 + ( 1/8 + 1/9 )

12. 9 × 5/6 + 5/6

13. 3/4 × 8/9 - 1/3

14. 7 × 5/49 + 3/14

15. 6 ×( 1/2 + 2/3 )

16. 8 × 4/5 + 8 × 11/5

17. 31 × 5/6 – 5/6

18. 9/7 - ( 2/7 – 10/21 )

19. 5/9 × 18 – 14 × 2/7

20. 4/5 × 25/16 + 2/3 × 3/4

21. 14 × 8/7 – 5/6 × 12/15

22. 17/32 – 3/4 × 9/24

23. 3 × 2/9 + 1/3

24. 5/7 × 3/25 + 3/7

25. 3/14 ×× 2/3 + 1/6

26. 1/5 × 2/3 + 5/6

27. 9/22 + 1/11 ÷ 1/2

28. 5/3 × 11/5 + 4/3

29. 45 × 2/3 + 1/3 × 15

30. 7/19 + 12/19 × 5/6

31. 1/4 + 3/4 ÷ 2/3

32. 8/7 × 21/16 + 1/2

33. 101 × 1/5 – 1/5 × 21

34.50+160÷40

35.120-144÷18+35

36.347+45×2-4160÷52

37(58+37)÷(64-9×5)

38.95÷(64-45)

39.178-145÷5×6+42

40.812-700÷(9+31×11)

41.85+14×(14+208÷26)

43.120-36×4÷18+35

44.(58+37)÷(64-9×5)

45.(6.8-6.8×0.55)÷8.5

46.0.12× 4.8÷0.12×4.8

47.(3.2×1.5+2.5)÷1.6

48.6-1.6÷4= 5.38+7.85-5.37=

49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

50.6.5×(4.8-1.2×4)=

51.5.8×(3.87-0.13)+4.2×3.74

52.32.52-(6+9.728÷3.2)×2.5

53.[(7.1-5.6)×0.9-1.15] ÷2.5

54.5.4÷[2.6×(3.7-2.9)+0.62]

55.12×6÷(12-7.2)-6

56.12×6÷7.2-6

57.0.68×1.9+0.32×1.9

58.58+370)÷(64-45)

59.420+580-64×21÷28

60.136+6×(65-345÷23)

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

31.50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11) (136+64)×(65-345÷23)

38.85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.[(7.1-5.6)×0.9-1.15] ÷2.5

52.5.4÷[2.6×(3.7-2.9)+0.62]

53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6

1.[(5.84-3.9)/0.4+0.15]*0.92

2.4.38/(36.94+34.3*0.2)

3.(284+16)*(512-8208/18)

4.5.4/[2.6*(3.7-2.9)+0.62]

5.[(7.1-5.6)*0.9-1.15]/2.5

6.32.52-(6+9.728/3.2)*2.5

7.5.8*(3.87-0.13)+4.2*3.7

8.8/9*[15/16*(7/16-1/4)/1/2]

9.[5 1/2-1.04*(1 2/3+5/6)]/2.9

10.6 3/7 /3/7-[(7-0.5)*1/4]

11.(0.75+0.2)/0.25*25%+12/0.75+7.2/2.4

12.1.21*42-(4.46+0.14)*1375+450/18*25

13.1+0.45/0.9-0.75-168.1/(4.3*2-0.4)

14.605*8+3.5-44+10.9-(6.6+0.125/12.5%)

15.56*(56-65)*[0.325-62/30+(56/8)-65 ]

16.4/7*5/9 + 3/7*5/9-3/4 × 8/9 - 1/3

17.50+160/40 *(58+370)/(64-45)

18.347+45×2-4160÷52

19.6-1.6÷4+ 5.38+7.85-5.37

20.5.4÷[2.6×(3.7-2.9)+0.62

1、直接写出得数。

0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3= 10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4= 0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=0.2×0.4= 8.2+1.8= 100-35.22= 2.3×4=

2.5×0.4= 2.4×5= 0.22×4= 3.25×0=

0.9-0.52= 3.99×1= 0×3.52= 12.5×8=

8÷10 = 10-1.8-7.2= 0.43+3.57= 2.5×4×12=

0.9×0.8= 7.5x-3x = a+3a+7a== 1.05×100= 1÷0.5= 0.96÷3= 1.47÷0.7= 5.4÷6=

0.16.5×10= 0.56×100= 3.78×100= 4÷0.8 =

3.215×100= 0.8×10= 4.08×100= 1.1×0.2 =

0.6×0.8 = 3×0.9= 2.5×0.4= 3.6×0.4=

12.5×8= 50×0.04= 80×0.3 = 1.1×9=

0.16×5 = 1.78+2.2 = 9.6÷0.6 = 1.2×0.5-0.4 = 0.7÷0.01 = 2.5×0.4 = 12-3.9= 1.25×8÷1.25 = 6.6÷0.66 = 5.37×0+4.63 = 3.9+2.03= 4.2÷3.5=

1.6+2.4×0.3 = 2.14-0.9= 27+456+73= 0.3×0.3=

7.2+2.8= 0.9÷0.01= 12÷0.3= 2.87÷0.7=

13÷4= 0.96÷0.3= 1.5×0.4= 7÷0.25= 2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01= 8×(2.5+0.25)= 0.36+0.64= 64.32÷16= 4.2÷0.1=

72.8÷0.8= 8.4÷4.2= 13.8+9.9= 2.4×2.5=

0.05×0.8= 2.56-0.37= 1.25×0.8×0.5= 12×2.5= 1.23×3= 3.2÷1.6= 3.5+3.5×3= 19.6÷2= 8.8÷2.2= 0.75×4= (1.5+0.25)×4= 0.5×0.8=

8.4×0.2= 1.6×0.2= 7.2×0.3= 2.8×0.3= 0.9÷0.15= 1.8×0.4= 5.5÷0.55= 0.08×100=

2.2÷0.11= 5.46+4.54= 12.5×0.8= 0.35×0.3=

1.4×5= 2.8×4= 19.6÷4= 22.5×4=

2、用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3=

(保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈

(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4) 2.13.×0.×8257

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5 4.2.×1.+1.×1.75

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

二、解方程:

54-X=24 7X=49 126÷X=42

13+A=28.5 2.4X=26.4 7.5x-3x=18

5×1.3-2x=5.5 24x+6x=63.6 5.6x+4.4x=5.2 小数乘除法计算题2010-02-07 09:24乘法:

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

1.1/3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

18.(43*20%)+(3*(1/9))

19.27*(9*(1/3))*5%

20.14*15%+25*8*(1/4)

21.7*(1/2)/49

22.(1+48%)*2

23.(4*8-12)*50%

24.(48/60%)/10

25. 63*(1/7)*30%

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9](1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9]

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

1.125*3+125*5+25*3+25

2.9999*3+101*11*(101-92)

3.(23/4-3/4)*(3*6+2)

4. 3/7 × 49/9 - 4/3

5. 8/9 × 15/36 + 1/27

6. 12× 5/6 – 2/9 ×3

7. 8× 5/4 + 1/4

8. 6÷ 3/8 – 3/8 ÷6

9. 4/7 × 5/9 + 3/7 × 5/9

10. 5/2 -( 3/2 + 4/5 )

11. 7/8 + ( 1/8 + 1/9 )

12. 9 × 5/6 + 5/6

13. 3/4 × 8/9 - 1/3

14. 7 × 5/49 + 3/14

15. 6 ×( 1/2 + 2/3 )

16. 8 × 4/5 + 8 × 11/5

17. 31 × 5/6 – 5/6

18. 9/7 - ( 2/7 – 10/21 )

19. 5/9 × 18 – 14 × 2/7

20. 4/5 × 25/16 + 2/3 × 3/4

21. 14 × 8/7 – 5/6 × 12/15

22. 17/32 – 3/4 × 9/24

23. 3 × 2/9 + 1/3

24. 5/7 × 3/25 + 3/7

25. 3/14 ×× 2/3 + 1/6

26. 1/5 × 2/3 + 5/6

27. 9/22 + 1/11 ÷ 1/2

28. 5/3 × 11/5 + 4/3

29. 45 × 2/3 + 1/3 × 15

30. 7/19 + 12/19 × 5/6

31. 1/4 + 3/4 ÷ 2/3

32. 8/7 × 21/16 + 1/2

33. 101 × 1/5 – 1/5 × 21

34.50+160÷40

35.120-144÷18+35

36.347+45×2-4160÷52

37(58+37)÷(64-9×5)

38.95÷(64-45)

39.178-145÷5×6+42

40.812-700÷(9+31×11)

41.85+14×(14+208÷26)

43.120-36×4÷18+35

44.(58+37)÷(64-9×5)

45.(6.8-6.8×0.55)÷8.5

46.0.12× 4.8÷0.12×4.8

47.(3.2×1.5+2.5)÷1.6

48.6-1.6÷4= 5.38+7.85-5.37=

49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

50.6.5×(4.8-1.2×4)=

51.5.8×(3.87-0.13)+4.2×3.74

52.32.52-(6+9.728÷3.2)×2.5

53.[(7.1-5.6)×0.9-1.15] ÷2.5

54.5.4÷[2.6×(3.7-2.9)+0.62]

55.12×6÷(12-7.2)-6

56.12×6÷7.2-6

57.0.68×1.9+0.32×1.9

58.58+370)÷(64-45)

59.420+580-64×21÷28

60.136+6×(65-345÷23)

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

31.50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11) (136+64)×(65-345÷23)

38.85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.[(7.1-5.6)×0.9-1.15] ÷2.5

52.5.4÷[2.6×(3.7-2.9)+0.62]

53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6

1.[(5.84-3.9)/0.4+0.15]*0.92

2.4.38/(36.94+34.3*0.2)

3.(284+16)*(512-8208/18)

4.5.4/[2.6*(3.7-2.9)+0.62]

5.[(7.1-5.6)*0.9-1.15]/2.5

6.32.52-(6+9.728/3.2)*2.5

7.5.8*(3.87-0.13)+4.2*3.7

8.8/9*[15/16*(7/16-1/4)/1/2]

9.[5 1/2-1.04*(1 2/3+5/6)]/2.9

10.6 3/7 /3/7-[(7-0.5)*1/4]

11.(0.75+0.2)/0.25*25%+12/0.75+7.2/2.4

12.1.21*42-(4.46+0.14)*1375+450/18*25

13.1+0.45/0.9-0.75-168.1/(4.3*2-0.4)

14.605*8+3.5-44+10.9-(6.6+0.125/12.5%)

15.56*(56-65)*[0.325-62/30+(56/8)-65 ]

16.4/7*5/9 + 3/7*5/9-3/4 × 8/9 - 1/3

17.50+160/40 *(58+370)/(64-45)

18.347+45×2-4160÷52

19.6-1.6÷4+ 5.38+7.85-5.37

20.5.4÷[2.6×(3.7-2.9)+0.62

1、直接写出得数。

0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3= 10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4= 0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=0.2×0.4= 8.2+1.8= 100-35.22= 2.3×4=

2.5×0.4= 2.4×5= 0.22×4= 3.25×0=

0.9-0.52= 3.99×1= 0×3.52= 12.5×8=

8÷10 = 10-1.8-7.2= 0.43+3.57= 2.5×4×12=

0.9×0.8= 7.5x-3x = a+3a+7a== 1.05×100= 1÷0.5= 0.96÷3= 1.47÷0.7= 5.4÷6=

0.16.5×10= 0.56×100= 3.78×100= 4÷0.8 =

3.215×100= 0.8×10= 4.08×100= 1.1×0.2 =

0.6×0.8 = 3×0.9= 2.5×0.4= 3.6×0.4=

12.5×8= 50×0.04= 80×0.3 = 1.1×9=

0.16×5 = 1.78+2.2 = 9.6÷0.6 = 1.2×0.5-0.4 = 0.7÷0.01 = 2.5×0.4 = 12-3.9= 1.25×8÷1.25 = 6.6÷0.66 = 5.37×0+4.63 = 3.9+2.03= 4.2÷3.5=

1.6+2.4×0.3 = 2.14-0.9= 27+456+73= 0.3×0.3=

7.2+2.8= 0.9÷0.01= 12÷0.3= 2.87÷0.7=

13÷4= 0.96÷0.3= 1.5×0.4= 7÷0.25= 2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01= 8×(2.5+0.25)= 0.36+0.64= 64.32÷16= 4.2÷0.1=

72.8÷0.8= 8.4÷4.2= 13.8+9.9= 2.4×2.5=

0.05×0.8= 2.56-0.37= 1.25×0.8×0.5= 12×2.5= 1.23×3= 3.2÷1.6= 3.5+3.5×3= 19.6÷2= 8.8÷2.2= 0.75×4= (1.5+0.25)×4= 0.5×0.8=

8.4×0.2= 1.6×0.2= 7.2×0.3= 2.8×0.3= 0.9÷0.15= 1.8×0.4= 5.5÷0.55= 0.08×100=

2.2÷0.11= 5.46+4.54= 12.5×0.8= 0.35×0.3=

1.4×5= 2.8×4= 19.6÷4= 22.5×4=

2、用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3=

(保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈

(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4) 2.13.×0.×8257

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5 4.2.×1.+1.×1.75

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

二、解方程:

54-X=24 7X=49 126÷X=42

13+A=28.5 2.4X=26.4 7.5x-3x=18

5×1.3-2x=5.5 24x+6x=63.6 5.6x+4.4x=5.2

回答者: ぐ沉默菋噵ぐ - 三级 2010-2-26 14:07

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

小学五年级数学小数乘除法

1. 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125 .9*8.96*0.8*1.25*25*3.2÷5.39

2 5.2*4.25÷10.68*582.3(保留一位小数)

3 9.87÷28.6×4.59÷98.7×2.86÷45.9

4 5.6×16.5÷0.7÷1.1

5 (6.4×12.5×0.5)÷(2.5×1.6×0.2)

6 0.525×17.36÷13.125÷4

7 5.14*6395*9867÷4820.37

8 56.5÷47÷9*820.23

9 80.214*5595÷2726

10 785*875.26÷520.63

11 879÷40.23*852.66

12 222÷3.25*55.55

13 846.7×5 2. 796.64×25

14 69.47÷0.5 4. 34.128÷0.25

15 0.99÷4.5 6. 4.8÷2.5

16 12.5×0.25×0.05×3.7×6.4

17 12.728÷2.5÷32÷0.125

18 0.04×0.5×1.25×0.8×0.2×0.025

19 9.87÷28.6×4.59÷98.7×2.86÷45.9

20 5.6×16.5÷0.7÷1.1

21 (6.4×12.5×0.5)÷(2.5×1.6×0.2)

22 0.525×17.36÷13.125÷4

23 3700÷6.4÷2.5÷12.5÷0.5

24 846.7×5 2. 796.64×25

25 69.47÷0.5 4. 34.128÷0.25

26 0.99÷4.5 6. 4.8÷2.5

27 12.5×0.25×0.05×3.7×6.4

28 12.728÷2.5÷32÷0.125

29 0.04×0.5×1.25×0.8×0.2×0.0

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5 4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52= 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5

4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52=

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

12.728÷2.5÷32÷0.125

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

3700÷6.4÷2.5÷12.5÷0.5

14x95286 87563x82568

29874423x0x103847322 834845502x13042894765

197371846x2319846356

890437965x015756

439085654101x0936051045446

4.9*8.96*0.8*1.25*25*3.2÷5.39

5.2*4.25÷10.68*582.3(保留一位小数)

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

5.14*6395*9867÷4820.37

56.5÷47÷9*820.23

80.214*5595÷2726

785*875.26÷520.63

879÷40.23*852.66

222÷3.25*55.55

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

12.728÷2.5÷32÷0.125

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

3700÷6.4÷2.5÷12.5÷0.5

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9 1. 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5 4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52=

五年级数学小数的乘除法

第一单元 小数乘法

1、小数乘整数:意义——求几个相同加数和的简便运算。

2、小数乘小数:意义——就是求这个数的几分之几是多少。

3、规律:一个数(0除外)乘大于1的数,积比原来的数大;一个数(0除外)乘小于1的数,积比原来的数小。

4、求近似数的方法一般有三种:(1)四舍五入法;(2)、进一法;(3)、去尾法

5、计算钱数,保留两位小数,表示计算到分。保留一位小数,表示计算到角。

6、小数四则运算顺序跟整数是一样的。

7、运算定律和性质:

第二单元 位置

8、确定物体的位置,要用到数对(先列即竖,后横即排)。用数对要能解决两个问题:一是给出一对数对,要能在坐标图中标出物体所在位置的点。二是给出坐标中的一个点,要能用数对表示。

第三单元 小数除法

10、小数除法的意义:已知两个因数的积与一种的一个因数,求另一个因数的运算。如:0.6÷0.3表示已知两个因数的积0.6,一个因数是0.3,求另一个因数是多少。

11、小数除以整数的计算方法:小数除以整数,按整数除法的方法去除,商的小数点要和被除数的小数点对齐。整数部分不够除,商0,点上小数点。如果有余数,要添0再除。

12、除数是小数的除法的计算方法:先将除数和被除数扩大相同的倍数,使除数变成整数,再按“除数是整数的小数除法”的法则进行计算。

注意:如果被除数的位数不够,在被除数的末尾用0补足。

13、在实际应用中,小数除法所得的商也可以根据需要用“四舍五日法”保留一定的小数位数,求出商的近似数。

14、除法中的变化规律:①商不变的性质:被除数和除数同时扩大或者缩小相同的倍数(0除外),商不变。②除数不变,被除数扩大(缩小),商随着扩大(缩小)。③被除数不变,除数缩小,商反而扩大;被除数不变,除数扩大,商反而缩小。

15、循环小数:一个数的小数部分,从某一位起,一个数字或者几个数字依次不断重复出现,这样的小数叫做循环小数。循环节:一个循环小数的小数部分,依次不断重复出现的数字。如6.3232.......的循环节是32,简写作6.32。

字数有限制,没办法发完整

五年级上册小数乘除法口算

50道小数乘除法口算题

1、14.4÷48=0.3

2、11.83÷7=1.69

3、29.4÷5=5.88

4、19.5÷39=0.5

5、29.6÷37=0.8

6、23.1÷21=1.1

7、37.44÷36=1.04

8、4.5÷10=0.45

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五年级简算计算题乘除法,急急急!

小数乘除法计算题2010-02-07 09:24乘法:

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

1.1/3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

18.(43*20%)+(3*(1/9))

19.27*(9*(1/3))*5%

20.14*15%+25*8*(1/4)

21.7*(1/2)/49

22.(1+48%)*2

23.(4*8-12)*50%

24.(48/60%)/10

25. 63*(1/7)*30%

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9](1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9]

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

1.125*3+125*5+25*3+25

2.9999*3+101*11*(101-92)

3.(23/4-3/4)*(3*6+2)

4. 3/7 × 49/9 - 4/3

5. 8/9 × 15/36 + 1/27

6. 12× 5/6 – 2/9 ×3

7. 8× 5/4 + 1/4

8. 6÷ 3/8 – 3/8 ÷6

9. 4/7 × 5/9 + 3/7 × 5/9

10. 5/2 -( 3/2 + 4/5 )

11. 7/8 + ( 1/8 + 1/9 )

12. 9 × 5/6 + 5/6

13. 3/4 × 8/9 - 1/3

14. 7 × 5/49 + 3/14

15. 6 ×( 1/2 + 2/3 )

16. 8 × 4/5 + 8 × 11/5

17. 31 × 5/6 – 5/6

18. 9/7 - ( 2/7 – 10/21 )

19. 5/9 × 18 – 14 × 2/7

20. 4/5 × 25/16 + 2/3 × 3/4

21. 14 × 8/7 – 5/6 × 12/15

22. 17/32 – 3/4 × 9/24

23. 3 × 2/9 + 1/3

24. 5/7 × 3/25 + 3/7

25. 3/14 ×× 2/3 + 1/6

26. 1/5 × 2/3 + 5/6

27. 9/22 + 1/11 ÷ 1/2

28. 5/3 × 11/5 + 4/3

29. 45 × 2/3 + 1/3 × 15

30. 7/19 + 12/19 × 5/6

31. 1/4 + 3/4 ÷ 2/3

32. 8/7 × 21/16 + 1/2

33. 101 × 1/5 – 1/5 × 21

34.50+160÷40

35.120-144÷18+35

36.347+45×2-4160÷52

37(58+37)÷(64-9×5)

38.95÷(64-45)

39.178-145÷5×6+42

40.812-700÷(9+31×11)

41.85+14×(14+208÷26)

43.120-36×4÷18+35

44.(58+37)÷(64-9×5)

45.(6.8-6.8×0.55)÷8.5

46.0.12× 4.8÷0.12×4.8

47.(3.2×1.5+2.5)÷1.6

48.6-1.6÷4= 5.38+7.85-5.37=

49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

50.6.5×(4.8-1.2×4)=

51.5.8×(3.87-0.13)+4.2×3.74

52.32.52-(6+9.728÷3.2)×2.5

53.[(7.1-5.6)×0.9-1.15] ÷2.5

54.5.4÷[2.6×(3.7-2.9)+0.62]

55.12×6÷(12-7.2)-6

56.12×6÷7.2-6

57.0.68×1.9+0.32×1.9

58.58+370)÷(64-45)

59.420+580-64×21÷28

60.136+6×(65-345÷23)

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

31.50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11) (136+64)×(65-345÷23)

38.85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.[(7.1-5.6)×0.9-1.15] ÷2.5

52.5.4÷[2.6×(3.7-2.9)+0.62]

53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6

1.[(5.84-3.9)/0.4+0.15]*0.92

2.4.38/(36.94+34.3*0.2)

3.(284+16)*(512-8208/18)

4.5.4/[2.6*(3.7-2.9)+0.62]

5.[(7.1-5.6)*0.9-1.15]/2.5

6.32.52-(6+9.728/3.2)*2.5

7.5.8*(3.87-0.13)+4.2*3.7

8.8/9*[15/16*(7/16-1/4)/1/2]

9.[5 1/2-1.04*(1 2/3+5/6)]/2.9

10.6 3/7 /3/7-[(7-0.5)*1/4]

11.(0.75+0.2)/0.25*25%+12/0.75+7.2/2.4

12.1.21*42-(4.46+0.14)*1375+450/18*25

13.1+0.45/0.9-0.75-168.1/(4.3*2-0.4)

14.605*8+3.5-44+10.9-(6.6+0.125/12.5%)

15.56*(56-65)*[0.325-62/30+(56/8)-65 ]

16.4/7*5/9 + 3/7*5/9-3/4 × 8/9 - 1/3

17.50+160/40 *(58+370)/(64-45)

18.347+45×2-4160÷52

19.6-1.6÷4+ 5.38+7.85-5.37

20.5.4÷[2.6×(3.7-2.9)+0.62

1、直接写出得数。

0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3= 10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4= 0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=0.2×0.4= 8.2+1.8= 100-35.22= 2.3×4=

2.5×0.4= 2.4×5= 0.22×4= 3.25×0=

0.9-0.52= 3.99×1= 0×3.52= 12.5×8=

8÷10 = 10-1.8-7.2= 0.43+3.57= 2.5×4×12=

0.9×0.8= 7.5x-3x = a+3a+7a== 1.05×100= 1÷0.5= 0.96÷3= 1.47÷0.7= 5.4÷6=

0.16.5×10= 0.56×100= 3.78×100= 4÷0.8 =

3.215×100= 0.8×10= 4.08×100= 1.1×0.2 =

0.6×0.8 = 3×0.9= 2.5×0.4= 3.6×0.4=

12.5×8= 50×0.04= 80×0.3 = 1.1×9=

0.16×5 = 1.78+2.2 = 9.6÷0.6 = 1.2×0.5-0.4 = 0.7÷0.01 = 2.5×0.4 = 12-3.9= 1.25×8÷1.25 = 6.6÷0.66 = 5.37×0+4.63 = 3.9+2.03= 4.2÷3.5=

1.6+2.4×0.3 = 2.14-0.9= 27+456+73= 0.3×0.3=

7.2+2.8= 0.9÷0.01= 12÷0.3= 2.87÷0.7=

13÷4= 0.96÷0.3= 1.5×0.4= 7÷0.25= 2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01= 8×(2.5+0.25)= 0.36+0.64= 64.32÷16= 4.2÷0.1=

72.8÷0.8= 8.4÷4.2= 13.8+9.9= 2.4×2.5=

0.05×0.8= 2.56-0.37= 1.25×0.8×0.5= 12×2.5= 1.23×3= 3.2÷1.6= 3.5+3.5×3= 19.6÷2= 8.8÷2.2= 0.75×4= (1.5+0.25)×4= 0.5×0.8=

8.4×0.2= 1.6×0.2= 7.2×0.3= 2.8×0.3= 0.9÷0.15= 1.8×0.4= 5.5÷0.55= 0.08×100=

2.2÷0.11= 5.46+4.54= 12.5×0.8= 0.35×0.3=

1.4×5= 2.8×4= 19.6÷4= 22.5×4=

2、用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3=

(保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈

(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4) 2.13.×0.×8257

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5 4.2.×1.+1.×1.75

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

二、解方程:

54-X=24 7X=49 126÷X=42

13+A=28.5 2.4X=26.4 7.5x-3x=18

5×1.3-2x=5.5 24x+6x=63.6 5.6x+4.4x=5.2 小数乘除法计算题2010-02-07 09:24乘法:

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

1.1/3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

18.(43*20%)+(3*(1/9))

19.27*(9*(1/3))*5%

20.14*15%+25*8*(1/4)

21.7*(1/2)/49

22.(1+48%)*2

23.(4*8-12)*50%

24.(48/60%)/10

25. 63*(1/7)*30%

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9](1)340×(120-40÷8)

(2)45×(720-1957÷19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷15-13×21)]

(5)[1054-(174-168)]÷8

(6)6048÷[(107-99)×9]

3*(5*(2/3))

2.(1+37%)*20

3.35/2*75%

4.30*(50/2)

5.(54+10%)/20

6.(25/3*18)*30%

7.(2+70%)*40

8.1/7*(98*(1/4)*2)

9.25%*((23+2%)*4)

10.(30+20%)/2

11.12*3/(25+20%)

12.30/(3+40%)

13.27/8*16*10%

14.(2/3)*(3+6)*(1/2)

15.45*(1/9)*24

16.(35+10%)*27

17.(45+50%)*3*1/2

1.125*3+125*5+25*3+25

2.9999*3+101*11*(101-92)

3.(23/4-3/4)*(3*6+2)

4. 3/7 × 49/9 - 4/3

5. 8/9 × 15/36 + 1/27

6. 12× 5/6 – 2/9 ×3

7. 8× 5/4 + 1/4

8. 6÷ 3/8 – 3/8 ÷6

9. 4/7 × 5/9 + 3/7 × 5/9

10. 5/2 -( 3/2 + 4/5 )

11. 7/8 + ( 1/8 + 1/9 )

12. 9 × 5/6 + 5/6

13. 3/4 × 8/9 - 1/3

14. 7 × 5/49 + 3/14

15. 6 ×( 1/2 + 2/3 )

16. 8 × 4/5 + 8 × 11/5

17. 31 × 5/6 – 5/6

18. 9/7 - ( 2/7 – 10/21 )

19. 5/9 × 18 – 14 × 2/7

20. 4/5 × 25/16 + 2/3 × 3/4

21. 14 × 8/7 – 5/6 × 12/15

22. 17/32 – 3/4 × 9/24

23. 3 × 2/9 + 1/3

24. 5/7 × 3/25 + 3/7

25. 3/14 ×× 2/3 + 1/6

26. 1/5 × 2/3 + 5/6

27. 9/22 + 1/11 ÷ 1/2

28. 5/3 × 11/5 + 4/3

29. 45 × 2/3 + 1/3 × 15

30. 7/19 + 12/19 × 5/6

31. 1/4 + 3/4 ÷ 2/3

32. 8/7 × 21/16 + 1/2

33. 101 × 1/5 – 1/5 × 21

34.50+160÷40

35.120-144÷18+35

36.347+45×2-4160÷52

37(58+37)÷(64-9×5)

38.95÷(64-45)

39.178-145÷5×6+42

40.812-700÷(9+31×11)

41.85+14×(14+208÷26)

43.120-36×4÷18+35

44.(58+37)÷(64-9×5)

45.(6.8-6.8×0.55)÷8.5

46.0.12× 4.8÷0.12×4.8

47.(3.2×1.5+2.5)÷1.6

48.6-1.6÷4= 5.38+7.85-5.37=

49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

50.6.5×(4.8-1.2×4)=

51.5.8×(3.87-0.13)+4.2×3.74

52.32.52-(6+9.728÷3.2)×2.5

53.[(7.1-5.6)×0.9-1.15] ÷2.5

54.5.4÷[2.6×(3.7-2.9)+0.62]

55.12×6÷(12-7.2)-6

56.12×6÷7.2-6

57.0.68×1.9+0.32×1.9

58.58+370)÷(64-45)

59.420+580-64×21÷28

60.136+6×(65-345÷23)

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

31.50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11) (136+64)×(65-345÷23)

38.85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.[(7.1-5.6)×0.9-1.15] ÷2.5

52.5.4÷[2.6×(3.7-2.9)+0.62]

53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6

1.[(5.84-3.9)/0.4+0.15]*0.92

2.4.38/(36.94+34.3*0.2)

3.(284+16)*(512-8208/18)

4.5.4/[2.6*(3.7-2.9)+0.62]

5.[(7.1-5.6)*0.9-1.15]/2.5

6.32.52-(6+9.728/3.2)*2.5

7.5.8*(3.87-0.13)+4.2*3.7

8.8/9*[15/16*(7/16-1/4)/1/2]

9.[5 1/2-1.04*(1 2/3+5/6)]/2.9

10.6 3/7 /3/7-[(7-0.5)*1/4]

11.(0.75+0.2)/0.25*25%+12/0.75+7.2/2.4

12.1.21*42-(4.46+0.14)*1375+450/18*25

13.1+0.45/0.9-0.75-168.1/(4.3*2-0.4)

14.605*8+3.5-44+10.9-(6.6+0.125/12.5%)

15.56*(56-65)*[0.325-62/30+(56/8)-65 ]

16.4/7*5/9 + 3/7*5/9-3/4 × 8/9 - 1/3

17.50+160/40 *(58+370)/(64-45)

18.347+45×2-4160÷52

19.6-1.6÷4+ 5.38+7.85-5.37

20.5.4÷[2.6×(3.7-2.9)+0.62

1、直接写出得数。

0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3= 10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4= 0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=0.2×0.4= 8.2+1.8= 100-35.22= 2.3×4=

2.5×0.4= 2.4×5= 0.22×4= 3.25×0=

0.9-0.52= 3.99×1= 0×3.52= 12.5×8=

8÷10 = 10-1.8-7.2= 0.43+3.57= 2.5×4×12=

0.9×0.8= 7.5x-3x = a+3a+7a== 1.05×100= 1÷0.5= 0.96÷3= 1.47÷0.7= 5.4÷6=

0.16.5×10= 0.56×100= 3.78×100= 4÷0.8 =

3.215×100= 0.8×10= 4.08×100= 1.1×0.2 =

0.6×0.8 = 3×0.9= 2.5×0.4= 3.6×0.4=

12.5×8= 50×0.04= 80×0.3 = 1.1×9=

0.16×5 = 1.78+2.2 = 9.6÷0.6 = 1.2×0.5-0.4 = 0.7÷0.01 = 2.5×0.4 = 12-3.9= 1.25×8÷1.25 = 6.6÷0.66 = 5.37×0+4.63 = 3.9+2.03= 4.2÷3.5=

1.6+2.4×0.3 = 2.14-0.9= 27+456+73= 0.3×0.3=

7.2+2.8= 0.9÷0.01= 12÷0.3= 2.87÷0.7=

13÷4= 0.96÷0.3= 1.5×0.4= 7÷0.25= 2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01= 8×(2.5+0.25)= 0.36+0.64= 64.32÷16= 4.2÷0.1=

72.8÷0.8= 8.4÷4.2= 13.8+9.9= 2.4×2.5=

0.05×0.8= 2.56-0.37= 1.25×0.8×0.5= 12×2.5= 1.23×3= 3.2÷1.6= 3.5+3.5×3= 19.6÷2= 8.8÷2.2= 0.75×4= (1.5+0.25)×4= 0.5×0.8=

8.4×0.2= 1.6×0.2= 7.2×0.3= 2.8×0.3= 0.9÷0.15= 1.8×0.4= 5.5÷0.55= 0.08×100=

2.2÷0.11= 5.46+4.54= 12.5×0.8= 0.35×0.3=

1.4×5= 2.8×4= 19.6÷4= 22.5×4=

2、用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3=

(保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈

(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4) 2.13.×0.×8257

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5 4.2.×1.+1.×1.75

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

二、解方程:

54-X=24 7X=49 126÷X=42

13+A=28.5 2.4X=26.4 7.5x-3x=18

5×1.3-2x=5.5 24x+6x=63.6 5.6x+4.4x=5.2

回答者: ぐ沉默菋噵ぐ - 三级 2010-2-26 14:07

5.6×2.9

3.77×1.8

0.02×96

5.22×0.3

9.99×0.02

4.67×0.9

5×2.44

1.666×6.1

9.432×0.002

5.6×6.5

4.88×2.9

5.61×4.3

8.9×2.4

5.5×55

9.77×0.02

1.384×5.1

8.78×83

2.6×61

0.059×0.2

4.268×1.7

57×5.7

9.46×2.85

17.8×6.4

1.5×4.9

2.5×0.88

5.555×5.2

2.22×3.33

7.658×85

36.02×0.3

56.78×8

除法:

85.44÷16

42.84÷7

101.7÷9

67.5÷15

230.4÷6

21.24÷36

0.736÷23

43.5÷12

35.21÷7

39.6÷24

6.21÷0.03

210÷1.4

51.3÷0.27

91.2÷3.8

0.756÷0.18

0.66÷0.3

11.97÷1.5

69.6÷2.9

38.4÷0.8

15÷0.06

(循环小数的用简便方法,除不尽保留2位小数):

8.2÷0.12

0.8÷0.9

76.4÷5.4

4.7÷3

1.25÷1.2

32÷42

14.36÷2.7

8.33÷6.2

1.7÷0.03

2.41÷0.7

用竖式计算

0.396÷1.2= 0.756÷0.36= 15.6×13=

0.18×15= 0.025×14= 3.06×36=

0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数)

7.15×22 90.75÷3.3 3.68×0.25

16.9÷0.13 1.55÷3.9 3.7×0.016

13.76×0.8= 5.2×0.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈(保留两位小数)

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)

10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9

7.28×99+7.28 4.3×50×0.2 64-2.64×0.5

26×15.7+15.7×24 (2.275 +0.625)×0.28

3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8

4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09

4.85 + 0.35 ÷ 1.4

8.7 × 17.4 - 8.7 × 7.4

12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101

0.68 ÷(5.2 -3.5)× 1.25

40.5 ÷ 0.81 × 0.18 4.8 ×(15 ÷ 2.4)

6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8

(9.37+9.37+9.37+9.37)× 2.5

2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1

2.5×(3.8×0.04) 7.69×101 3.8×10.1

0.25×39+0.25 0.125×72 46×0.33+54×0.33

(8×5.27) ×1.25 6.81+6.81×99 0.25×185×40

6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2

9.5×99 13.5×0.98 12.5×8.8

小学五年级数学小数乘除法

1. 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125 .9*8.96*0.8*1.25*25*3.2÷5.39

2 5.2*4.25÷10.68*582.3(保留一位小数)

3 9.87÷28.6×4.59÷98.7×2.86÷45.9

4 5.6×16.5÷0.7÷1.1

5 (6.4×12.5×0.5)÷(2.5×1.6×0.2)

6 0.525×17.36÷13.125÷4

7 5.14*6395*9867÷4820.37

8 56.5÷47÷9*820.23

9 80.214*5595÷2726

10 785*875.26÷520.63

11 879÷40.23*852.66

12 222÷3.25*55.55

13 846.7×5 2. 796.64×25

14 69.47÷0.5 4. 34.128÷0.25

15 0.99÷4.5 6. 4.8÷2.5

16 12.5×0.25×0.05×3.7×6.4

17 12.728÷2.5÷32÷0.125

18 0.04×0.5×1.25×0.8×0.2×0.025

19 9.87÷28.6×4.59÷98.7×2.86÷45.9

20 5.6×16.5÷0.7÷1.1

21 (6.4×12.5×0.5)÷(2.5×1.6×0.2)

22 0.525×17.36÷13.125÷4

23 3700÷6.4÷2.5÷12.5÷0.5

24 846.7×5 2. 796.64×25

25 69.47÷0.5 4. 34.128÷0.25

26 0.99÷4.5 6. 4.8÷2.5

27 12.5×0.25×0.05×3.7×6.4

28 12.728÷2.5÷32÷0.125

29 0.04×0.5×1.25×0.8×0.2×0.0

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5 4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52= 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5

4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52=

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

12.728÷2.5÷32÷0.125

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

3700÷6.4÷2.5÷12.5÷0.5

14x95286 87563x82568

29874423x0x103847322 834845502x13042894765

197371846x2319846356

890437965x015756

439085654101x0936051045446

4.9*8.96*0.8*1.25*25*3.2÷5.39

5.2*4.25÷10.68*582.3(保留一位小数)

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

5.14*6395*9867÷4820.37

56.5÷47÷9*820.23

80.214*5595÷2726

785*875.26÷520.63

879÷40.23*852.66

222÷3.25*55.55

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

12.728÷2.5÷32÷0.125

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9

5.6×16.5÷0.7÷1.1

(6.4×12.5×0.5)÷(2.5×1.6×0.2)

0.525×17.36÷13.125÷4

3700÷6.4÷2.5÷12.5÷0.5

846.7×5 2. 796.64×25

69.47÷0.5 4. 34.128÷0.25

0.99÷4.5 6. 4.8÷2.5

12.5×0.25×0.05×3.7×6.4

0.04×0.5×1.25×0.8×0.2×0.025

9.87÷28.6×4.59÷98.7×2.86÷45.9 1. 846.7×5 2. 796.64×25

3. 69.47÷0.5 4. 34.128÷0.25

5. 0.99÷4.5 6. 4.8÷2.5

7. 12.5×0.25×0.05×3.7×6.4

8. 12.728÷2.5÷32÷0.125

9. 0.04×0.5×1.25×0.8×0.2×0.025

10. 9.87÷28.6×4.59÷98.7×2.86÷45.9

11. 5.6×16.5÷0.7÷1.1

12. (6.4×12.5×0.5)÷(2.5×1.6×0.2)

13. 0.525×17.36÷13.125÷4

14. 3700÷6.4÷2.5÷12.5÷0.5 4X7= 48/8= 1.5X4= 0.4X7= 4.8/8= 1.5X0.4= 0.4X0.7=

4.8/0.8= 6/5= 0.4X0.07= 4.8/0.08= 6/0.5= 0.36x35=

4.3x0.28= 3.15x0.16= 39.2/1.4= 2.04/2.4= 44.2/0.52=

五年级数学小数的乘除法

第一单元 小数乘法

1、小数乘整数:意义——求几个相同加数和的简便运算。

2、小数乘小数:意义——就是求这个数的几分之几是多少。

3、规律:一个数(0除外)乘大于1的数,积比原来的数大;一个数(0除外)乘小于1的数,积比原来的数小。

4、求近似数的方法一般有三种:(1)四舍五入法;(2)、进一法;(3)、去尾法

5、计算钱数,保留两位小数,表示计算到分。保留一位小数,表示计算到角。

6、小数四则运算顺序跟整数是一样的。

7、运算定律和性质:

第二单元 位置

8、确定物体的位置,要用到数对(先列即竖,后横即排)。用数对要能解决两个问题:一是给出一对数对,要能在坐标图中标出物体所在位置的点。二是给出坐标中的一个点,要能用数对表示。

第三单元 小数除法

10、小数除法的意义:已知两个因数的积与一种的一个因数,求另一个因数的运算。如:0.6÷0.3表示已知两个因数的积0.6,一个因数是0.3,求另一个因数是多少。

11、小数除以整数的计算方法:小数除以整数,按整数除法的方法去除,商的小数点要和被除数的小数点对齐。整数部分不够除,商0,点上小数点。如果有余数,要添0再除。

12、除数是小数的除法的计算方法:先将除数和被除数扩大相同的倍数,使除数变成整数,再按“除数是整数的小数除法”的法则进行计算。

注意:如果被除数的位数不够,在被除数的末尾用0补足。

13、在实际应用中,小数除法所得的商也可以根据需要用“四舍五日法”保留一定的小数位数,求出商的近似数。

14、除法中的变化规律:①商不变的性质:被除数和除数同时扩大或者缩小相同的倍数(0除外),商不变。②除数不变,被除数扩大(缩小),商随着扩大(缩小)。③被除数不变,除数缩小,商反而扩大;被除数不变,除数扩大,商反而缩小。

15、循环小数:一个数的小数部分,从某一位起,一个数字或者几个数字依次不断重复出现,这样的小数叫做循环小数。循环节:一个循环小数的小数部分,依次不断重复出现的数字。如6.3232.......的循环节是32,简写作6.32。

字数有限制,没办法发完整

五年级上册小数乘除法口算

50道小数乘除法口算题

1、14.4÷48=0.3

2、11.83÷7=1.69

3、29.4÷5=5.88

4、19.5÷39=0.5

5、29.6÷37=0.8

6、23.1÷21=1.1

7、37.44÷36=1.04

8、4.5÷10=0.45

五年级小数乘除法50道(五年级数学小数的乘除法)