有理数混合运算50题(有理数混合运算50题含答案)
有理数混合运算50题(有理数混合运算50题含答案)

有理数的加减混合运算?

七年级有理数加减法混合计算题50道

(sinα +cosα)²=sin²α+cos²α+2sinα *cosα=1+2sinα *cosα=(1-√3)²/4=1-(√3)/2 sinα *cosα=-(√3)/4 sinα[(1-√3)/2-sinα]=-(√3)/4 sin²α-(1/2-√3/2)sinα-√3/4=0 (sinα+√3/2)(sinα-1/2)=0 sinα=1/2 或sinα=-√3/2(不在0

七年级有理数加减混合计算题

有理数的加减混合运算(乘除扔了)

1) (-9)-(-13)+(-20)+(-2)

(2) 3+13-(-7)/6

(3) (-2)-8-14-13

(4) (-7)*(-1)/7+8

(5) (-11)*4-(-18)/18

(6) 4+(-11)-1/(-3)

(7) (-17)-6-16/(-18)

(8) 5/7+(-1)-(-8)

(9) (-1)*(-1)+15+1

(10) 3-(-5)*3/(-15)

(11) 6*(-14)-(-14)+(-13)

(12) (-15)*(-13)-(-17)-(-4)

(13) (-20)/13/(-7)+11

(14) 8+(-1)/7+(-4)

(15) (-13)-(-9)*16*(-12)

(16) (-1)+4*19+(-2)

(17) (-17)*(-9)-20+(-6)

(18) (-5)/12-(-16)*(-15)

(19) (-3)-13*(-5)*13

(20) 5+(-7)+17-10

(21) (-10)-(-16)-13*(-16)

(22) (-14)+4-19-12

(23) 5*13/14/(-10)

(24) 3*1*17/(-10)

(25) 6+(-12)+15-(-15)

(26) 15/9/13+(-7)

(27) 2/(-10)*1-(-8)

(28) 11/(-19)+(-14)-5

(29) 19-16+18/(-11)

(30) (-1)/19+(-5)+1

(31) (-5)+19/10*(-5)

(32) 11/(-17)*(-13)*12

(33) (-8)+(-10)/8*17

(34) 7-(-12)/(-1)+(-12)

(35) 12+12-19+20

(36) (-13)*(-11)*20+(-4)

(37) 17/(-2)-2*(-19)

(38) 1-12*(-16)+(-9)

(39) 13*(-14)-15/20

(40) (-15)*(-13)-6/(-9)

(41) 15*(-1)/12+7

(42) (-13)+(-16)+(-14)-(-6)

(43) 14*12*(-20)*(-13)

(44) 17-9-20+(-10)

(45) 12/(-14)+(-14)+(-2)

(46) (-15)-12/(-17)-(-3)

(47) 6-3/9/(-8)

(48) (-20)*(-15)*10*(-4)

(49) 7/(-2)*(-3)/(-14)

(50) 13/2*18*(-7)

(51) 13*5+6+3

(52) (-15)/5/3+(-20)

(53) 19*4+17-4

(54) (-11)-(-6)*(-4)*(-9)

(55) (-16)+16-(-8)*(-13)

(56) 16/(-1)/(-10)/(-20)

(57) (-1)-(-9)-9/(-19)

(58) 13*20*(-13)*4

(59) 11*(-6)-3+18

(60) (-20)+(-12)+(-1)+(-12)

(61) (-19)-3*(-13)*4

(62) (-13)/3-5*8

(63) (-15)/1+17*(-18)

(64) (-13)/3/19/8

(65) (-3)/(-13)/20*5

(66) 3/12/(-18)-18

(67) 5*(-19)/13+(-6)

(68) 4+4*(-19)-11

(69) (-2)+17-5+(-1)

(70) 9+(-3)*19*(-19)

(71) (-12)-(-6)+17/2

(72) 15*(-5)-(-3)/5

(73) (-10)*2/(-1)/4

(74) (-8)*16/(-6)+4

(75) 2-11+12+10

(76) (-3)+(-20)*(-7)*(-9)

(77) (-15)+8-17/7

(78) (-14)*10+18*2

(79) (-7)+2-(-17)*19

(80) (-7)/18/1+1

(81) 11/(-9)-(-16)/17

(82) 15+5*6-(-8)

(83) (-13)*(-18)+18/(-6)

(84) 11-(-1)/11*(-6)

(85) (-4)+(-12)+19/6

(86) (-18)/(-1)/(-19)+2

(87) 9*(-8)*(-6)/11

(88) 20*(-3)*(-5)+1

(89) (-18)-2+(-11)/20

(90) 15*1+4*17

(91) 1-10+(-14)/(-1)

(92) 10+(-4)*(-19)+(-12)

(93) 15/14/5*7

(94) 8+(-13)/3+1

(95) (-14)+6+(-2)*(-14)

(96) (-5)/(-13)/4+7

(97) (-15)/(-2)/(-12)+(-2)

(98) (-17)-(-20)-20*(-10)

(99) (-7)-10-13/3

(100) (-20)+(-18)+11+9

答案:

1 -18

2 103/6

3 -37

4 9

5 -43

6 -(20/3)

7 -(199/9)

8 54/7

9 17

10 2

11 -83

12 216

13 1021/91

14 27/7

15 -1741

16 73

17 127

18 -(2885/12)

19 842

20 5

21 214

22 -41

23 -(13/28)

24 -(51/10)

25 24

26 -(268/39)

27 39/5

28 -(372/19)

29 15/11

30 -(77/19)

31 -(29/2)

32 1716/17

33 -(117/4)

34 -17

35 25

36 2856

37 59/2

38 184

39 -(731/4)

40 587/3

41 23/4

42 -37

43 43680

44 -22

45 -(118/7)

46 -(192/17)

47 145/24

48 -12000

49 -(3/4)

50 -819

51 74

52 -21

53 89

54 205

55 -104

56 -(2/25)

57 161/19

58 -13520

59 -51

60 -45

61 137

62 -(133/3)

63 -321

64 -(13/456)

65 3/52

66 -(1297/72)

67 -(173/13)

68 -83

69 9

70 1092

71 5/2

72 -(372/5)

73 5

74 76/3

75 13

76 -1263

77 -(66/7)

78 -104

79 318

80 11/18

81 -(43/153)

82 53

83 231

84 115/11

85 -(77/6)

86 20/19

87 432/11

88 301

89 -(411/20)

90 83

91 5

92 74

93 3/2

94 14/3

95 20

96 369/52

97 -(21/8)

98 203

99 -(64/3)

100 -18

有理数的加减乘除混合运算 120道 也不要太难的

有理数计算练习题 一、 有理数加法 (-9)+(-13) (-12)+27 67+(-92) (-27.8)+43.9 (-23)+7+(-152)+65 38+(-22)+(+62)+(-78) (- 2 )+0+(+ 1 )+(- 1 )+(- 1 ) 3 4 6 2

(-28)+(-34)

2 | 5 +(- 1 )| 3

2 (- 5 )+|― 1 | 3

(-8)+(-10)+2+(-1) (-8)+47+18+(-27)

(-5)+21+(-95)+29 (-8.25)+8.25+(-0.25)+(-5.75)+(-7.5) 6+(-7)+(9)+2 72+65+(-105)+(-28) (-23)+|-63|+|-37|+(-77) 19+(-195)+47 (+18)+(-32)+(-16)+(+26) (-0.8)+(-1.2)+(-0.6)+(-2.4) (-8)+(-3 1 )+2+(- 1 )+12 2 2 (-6.37)+(-3 3 )+6.37+2.75 4

3 2 5 5 +(-5 2 )+4 5 +(- 1 ) 3 3

二、 7-9

有理数减法 ―7―9

0-(-9) (-12.5)-(-7.5)

(-25)-(-13)

8.2―(―6.3)

(-3 1 )-5 1 2 4 ―1―(- 1 )―(+ 3 ) 2 2

(-26) +(-12)―12―18 (-23)―(-59)―(-3.5)

3 4 2 (+ 10 )―(- 7 )―(- 5 )― 10 7

(-20)-(+5)-(-5)-(-12)

5 (- 1 )―(- 8 )― 1 4 8

|-32|―(-12)―72―(-5) (- 16 )―3―(-3.2)―7 5

3 2 (+ 1 )―(- 7 )― 7 7

(+6.1)―(-4.3)―(-2.1)―5.1 (-3 2 )―(-2) 3 ―(-1 2 )―(-1.75) 3 4 3 -4 3 + 1 +(- 2 )― 5 4 6 3 2

(- 2 )―(-1 3 )―(-1 2 )―(+1.75) 3 4 3

2 -8 3 -5 7 +4 1 -3 9 4 9 6

0.5+(- 1 )-(-2.75)+ 1 4 2 (-0.5)-(-3 1 )+6.75-5 1 4 2

(+4.3)-(-4)+(-2.3)-(+4)

三、

有理数乘法

2 (- 13 )��(-0.26)

(-9)�� 2 3

1 3

(-2)��31��(-0.5)

��(-5)+ 1 ��(-13) 3

(-4)��(-10)��0.5��(-3)

4 (-0.25)��(- 7 )��4��(-7)

3 (- 8 )�� 4 ��(-1.8) 3

3 7 4 (- 7 )��(- 5 )��(- 12 )

(-8)��4��(- 1 )��(-0.75) 2

3 4 ( 7 -1 1 + 14 )��56 8 5 ( 6 ― 3 ― 7 )��36 4 9

1 4��(-96)��(-0.25)�� 48

5 7 4 (-36)��( 9 + 6 - 12 )

(- 3 )��(8- 4 -0.4) 4 3 25�� 3 -(-25)�� 1 +25�� 1 4 2 4

1 3 3 5 2 ��(2 14 - 7 )��(- 8 )��(- 16 ) 5

5 21 (-66)��〔1 22 -(- 1 )+(- 11 ) 〕 3

7 5 ( 18 + 3 - 6 + 7 )��72 4 9

有理数混合运算50题含答案

1. 2100-21×53+2255

2. (103-336÷21)×15

3. 800-(2000-9600÷8)

4. 40×48-(1472+328)÷5

5. (488+344)÷(202-194)

6. 2940÷28+136×7

7. 605×(500-494)-1898

8. (2886+6618)÷(400-346)

9. 9125-(182+35×22)

10. (154-76)×(38+49)

11. 3800-136×9-798

12. (104+246)×(98÷7)

13. 918÷9×(108-99)

14. (8645+40×40)÷5

15. (2944+864)÷(113-79)

16. 8080-1877+1881÷3

17. (5011-43×85)+3397

18. 2300-1122÷(21-15)

19. 816÷(4526-251×18)

20. (7353+927)÷(801-792)

21. (28+172)÷(24+16)

22. 6240÷48+63×48

23. 950-28×6+666

24. 86×(35+117÷9)

25. 2500+(360-160÷4)

26. 16×4+6×3

27.39÷3+48÷6

28.24×4-42÷3

29.7×6-12×3

30.56÷4+72÷8

(1) (-9)-(-13)+(-20)+(-2)

(2) 3+13-(-7)/6

(3) (-2)-8-14-13

(4) (-7)*(-1)/7+8

(5) (-11)*4-(-18)/18

(6) 4+(-11)-1/(-3)

(7) (-17)-6-16/(-18)

(8) 5/7+(-1)-(-8)

(9) (-1)*(-1)+15+1

(10) 3-(-5)*3/(-15)

(11) 6*(-14)-(-14)+(-13)

(12) (-15)*(-13)-(-17)-(-4)

(13) (-20)/13/(-7)+11

(14) 8+(-1)/7+(-4)

(15) (-13)-(-9)*16*(-12)

(16) (-1)+4*19+(-2)

(17) (-17)*(-9)-20+(-6)

(18) (-5)/12-(-16)*(-15)

(19) (-3)-13*(-5)*13

(20) 5+(-7)+17-10

(21) (-10)-(-16)-13*(-16)

(22) (-14)+4-19-12

(23) 5*13/14/(-10)

(24) 3*1*17/(-10)

(25) 6+(-12)+15-(-15)

(26) 15/9/13+(-7)

(27) 2/(-10)*1-(-8)

(28) 11/(-19)+(-14)-5

(29) 19-16+18/(-11)

(30) (-1)/19+(-5)+1

有理数混合运算50题计算方法

有理数加减混合运算,求简便过程 。并且教教这类题如何算

32.76+17.24-113.76-19.24

=(+32.76)+(+17.24)-(+113.76)-(+19.24)

=[(+32.76)-(+113.76)]+[(+17.24)-(+19.24)]

=(-81)+(-2)

=-83

这类题目,根据题目中的资料特征,把两个数相加或相减能得到整数的结合在一起就比较简便了。

求10题有理数的加减混合运算

(-3)-(-2.5)+(-0.5)-(+6)

12+11-8+39

45-9-91+5;

(5-6)-(7-9)

分别根据下列条件求代数式x-y-z+w的值: (1)x=-3,y=-2,z=0,w=5;

(2)x=0.3,y=-0.7,z=1.1,w=-2.1;

已知3a=a+a+a,分别根据下列条件求代数式3a的值: (1)a=-1;

(2)a=-2;

(3)a=-3;

(4)a=-0.5. 有理数加减混合运算的计算步骤如下:1. 先计算括号内的运算,按照先乘除后加减的原则进行计算。2. 将括号内的结果代入原式中,按照先乘除后加减的原则进行计算。3. 最后得到的结果即为有理数加减混合运算的答案。例如,计算表达式:3/4 + (2/3 - 1/2) × 5/61. 先计算括号内的运算:2/3 - 1/2 = (4/6) - (3/6) = 1/62. 将括号内的结果代入原式中:3/4 + 1/6 × 5/6 = 3/4 + 5/363. 按照先乘除后加减的原则进行计算:3/4 + 5/36 = 27/36 + 5/36 = 32/36 = 8/9因此,表达式3/4 + (2/3 - 1/2) × 5/6的结果为8/9。

有理数混合运算50题难

很多同学都认为数学计算很难,我整理了一些有理数的混合运算题,大家一起来看看吧。

有理数混合运算

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)

5+21*8/2-6-59

68/21-8-11*8+61

-2/9-7/9-56

4.6-(-3/4+1.6-4-3/4)

免费下载这份资料?立即下载

有理数的加减混合运算?

七年级有理数加减法混合计算题50道

(sinα +cosα)²=sin²α+cos²α+2sinα *cosα=1+2sinα *cosα=(1-√3)²/4=1-(√3)/2 sinα *cosα=-(√3)/4 sinα[(1-√3)/2-sinα]=-(√3)/4 sin²α-(1/2-√3/2)sinα-√3/4=0 (sinα+√3/2)(sinα-1/2)=0 sinα=1/2 或sinα=-√3/2(不在0

七年级有理数加减混合计算题

有理数的加减混合运算(乘除扔了)

1) (-9)-(-13)+(-20)+(-2)

(2) 3+13-(-7)/6

(3) (-2)-8-14-13

(4) (-7)*(-1)/7+8

(5) (-11)*4-(-18)/18

(6) 4+(-11)-1/(-3)

(7) (-17)-6-16/(-18)

(8) 5/7+(-1)-(-8)

(9) (-1)*(-1)+15+1

(10) 3-(-5)*3/(-15)

(11) 6*(-14)-(-14)+(-13)

(12) (-15)*(-13)-(-17)-(-4)

(13) (-20)/13/(-7)+11

(14) 8+(-1)/7+(-4)

(15) (-13)-(-9)*16*(-12)

(16) (-1)+4*19+(-2)

(17) (-17)*(-9)-20+(-6)

(18) (-5)/12-(-16)*(-15)

(19) (-3)-13*(-5)*13

(20) 5+(-7)+17-10

(21) (-10)-(-16)-13*(-16)

(22) (-14)+4-19-12

(23) 5*13/14/(-10)

(24) 3*1*17/(-10)

(25) 6+(-12)+15-(-15)

(26) 15/9/13+(-7)

(27) 2/(-10)*1-(-8)

(28) 11/(-19)+(-14)-5

(29) 19-16+18/(-11)

(30) (-1)/19+(-5)+1

(31) (-5)+19/10*(-5)

(32) 11/(-17)*(-13)*12

(33) (-8)+(-10)/8*17

(34) 7-(-12)/(-1)+(-12)

(35) 12+12-19+20

(36) (-13)*(-11)*20+(-4)

(37) 17/(-2)-2*(-19)

(38) 1-12*(-16)+(-9)

(39) 13*(-14)-15/20

(40) (-15)*(-13)-6/(-9)

(41) 15*(-1)/12+7

(42) (-13)+(-16)+(-14)-(-6)

(43) 14*12*(-20)*(-13)

(44) 17-9-20+(-10)

(45) 12/(-14)+(-14)+(-2)

(46) (-15)-12/(-17)-(-3)

(47) 6-3/9/(-8)

(48) (-20)*(-15)*10*(-4)

(49) 7/(-2)*(-3)/(-14)

(50) 13/2*18*(-7)

(51) 13*5+6+3

(52) (-15)/5/3+(-20)

(53) 19*4+17-4

(54) (-11)-(-6)*(-4)*(-9)

(55) (-16)+16-(-8)*(-13)

(56) 16/(-1)/(-10)/(-20)

(57) (-1)-(-9)-9/(-19)

(58) 13*20*(-13)*4

(59) 11*(-6)-3+18

(60) (-20)+(-12)+(-1)+(-12)

(61) (-19)-3*(-13)*4

(62) (-13)/3-5*8

(63) (-15)/1+17*(-18)

(64) (-13)/3/19/8

(65) (-3)/(-13)/20*5

(66) 3/12/(-18)-18

(67) 5*(-19)/13+(-6)

(68) 4+4*(-19)-11

(69) (-2)+17-5+(-1)

(70) 9+(-3)*19*(-19)

(71) (-12)-(-6)+17/2

(72) 15*(-5)-(-3)/5

(73) (-10)*2/(-1)/4

(74) (-8)*16/(-6)+4

(75) 2-11+12+10

(76) (-3)+(-20)*(-7)*(-9)

(77) (-15)+8-17/7

(78) (-14)*10+18*2

(79) (-7)+2-(-17)*19

(80) (-7)/18/1+1

(81) 11/(-9)-(-16)/17

(82) 15+5*6-(-8)

(83) (-13)*(-18)+18/(-6)

(84) 11-(-1)/11*(-6)

(85) (-4)+(-12)+19/6

(86) (-18)/(-1)/(-19)+2

(87) 9*(-8)*(-6)/11

(88) 20*(-3)*(-5)+1

(89) (-18)-2+(-11)/20

(90) 15*1+4*17

(91) 1-10+(-14)/(-1)

(92) 10+(-4)*(-19)+(-12)

(93) 15/14/5*7

(94) 8+(-13)/3+1

(95) (-14)+6+(-2)*(-14)

(96) (-5)/(-13)/4+7

(97) (-15)/(-2)/(-12)+(-2)

(98) (-17)-(-20)-20*(-10)

(99) (-7)-10-13/3

(100) (-20)+(-18)+11+9

答案:

1 -18

2 103/6

3 -37

4 9

5 -43

6 -(20/3)

7 -(199/9)

8 54/7

9 17

10 2

11 -83

12 216

13 1021/91

14 27/7

15 -1741

16 73

17 127

18 -(2885/12)

19 842

20 5

21 214

22 -41

23 -(13/28)

24 -(51/10)

25 24

26 -(268/39)

27 39/5

28 -(372/19)

29 15/11

30 -(77/19)

31 -(29/2)

32 1716/17

33 -(117/4)

34 -17

35 25

36 2856

37 59/2

38 184

39 -(731/4)

40 587/3

41 23/4

42 -37

43 43680

44 -22

45 -(118/7)

46 -(192/17)

47 145/24

48 -12000

49 -(3/4)

50 -819

51 74

52 -21

53 89

54 205

55 -104

56 -(2/25)

57 161/19

58 -13520

59 -51

60 -45

61 137

62 -(133/3)

63 -321

64 -(13/456)

65 3/52

66 -(1297/72)

67 -(173/13)

68 -83

69 9

70 1092

71 5/2

72 -(372/5)

73 5

74 76/3

75 13

76 -1263

77 -(66/7)

78 -104

79 318

80 11/18

81 -(43/153)

82 53

83 231

84 115/11

85 -(77/6)

86 20/19

87 432/11

88 301

89 -(411/20)

90 83

91 5

92 74

93 3/2

94 14/3

95 20

96 369/52

97 -(21/8)

98 203

99 -(64/3)

100 -18

有理数的加减乘除混合运算 120道 也不要太难的

有理数计算练习题 一、 有理数加法 (-9)+(-13) (-12)+27 67+(-92) (-27.8)+43.9 (-23)+7+(-152)+65 38+(-22)+(+62)+(-78) (- 2 )+0+(+ 1 )+(- 1 )+(- 1 ) 3 4 6 2

(-28)+(-34)

2 | 5 +(- 1 )| 3

2 (- 5 )+|― 1 | 3

(-8)+(-10)+2+(-1) (-8)+47+18+(-27)

(-5)+21+(-95)+29 (-8.25)+8.25+(-0.25)+(-5.75)+(-7.5) 6+(-7)+(9)+2 72+65+(-105)+(-28) (-23)+|-63|+|-37|+(-77) 19+(-195)+47 (+18)+(-32)+(-16)+(+26) (-0.8)+(-1.2)+(-0.6)+(-2.4) (-8)+(-3 1 )+2+(- 1 )+12 2 2 (-6.37)+(-3 3 )+6.37+2.75 4

3 2 5 5 +(-5 2 )+4 5 +(- 1 ) 3 3

二、 7-9

有理数减法 ―7―9

0-(-9) (-12.5)-(-7.5)

(-25)-(-13)

8.2―(―6.3)

(-3 1 )-5 1 2 4 ―1―(- 1 )―(+ 3 ) 2 2

(-26) +(-12)―12―18 (-23)―(-59)―(-3.5)

3 4 2 (+ 10 )―(- 7 )―(- 5 )― 10 7

(-20)-(+5)-(-5)-(-12)

5 (- 1 )―(- 8 )― 1 4 8

|-32|―(-12)―72―(-5) (- 16 )―3―(-3.2)―7 5

3 2 (+ 1 )―(- 7 )― 7 7

(+6.1)―(-4.3)―(-2.1)―5.1 (-3 2 )―(-2) 3 ―(-1 2 )―(-1.75) 3 4 3 -4 3 + 1 +(- 2 )― 5 4 6 3 2

(- 2 )―(-1 3 )―(-1 2 )―(+1.75) 3 4 3

2 -8 3 -5 7 +4 1 -3 9 4 9 6

0.5+(- 1 )-(-2.75)+ 1 4 2 (-0.5)-(-3 1 )+6.75-5 1 4 2

(+4.3)-(-4)+(-2.3)-(+4)

三、

有理数乘法

2 (- 13 )��(-0.26)

(-9)�� 2 3

1 3

(-2)��31��(-0.5)

��(-5)+ 1 ��(-13) 3

(-4)��(-10)��0.5��(-3)

4 (-0.25)��(- 7 )��4��(-7)

3 (- 8 )�� 4 ��(-1.8) 3

3 7 4 (- 7 )��(- 5 )��(- 12 )

(-8)��4��(- 1 )��(-0.75) 2

3 4 ( 7 -1 1 + 14 )��56 8 5 ( 6 ― 3 ― 7 )��36 4 9

1 4��(-96)��(-0.25)�� 48

5 7 4 (-36)��( 9 + 6 - 12 )

(- 3 )��(8- 4 -0.4) 4 3 25�� 3 -(-25)�� 1 +25�� 1 4 2 4

1 3 3 5 2 ��(2 14 - 7 )��(- 8 )��(- 16 ) 5

5 21 (-66)��〔1 22 -(- 1 )+(- 11 ) 〕 3

7 5 ( 18 + 3 - 6 + 7 )��72 4 9

有理数混合运算50题含答案

1. 2100-21×53+2255

2. (103-336÷21)×15

3. 800-(2000-9600÷8)

4. 40×48-(1472+328)÷5

5. (488+344)÷(202-194)

6. 2940÷28+136×7

7. 605×(500-494)-1898

8. (2886+6618)÷(400-346)

9. 9125-(182+35×22)

10. (154-76)×(38+49)

11. 3800-136×9-798

12. (104+246)×(98÷7)

13. 918÷9×(108-99)

14. (8645+40×40)÷5

15. (2944+864)÷(113-79)

16. 8080-1877+1881÷3

17. (5011-43×85)+3397

18. 2300-1122÷(21-15)

19. 816÷(4526-251×18)

20. (7353+927)÷(801-792)

21. (28+172)÷(24+16)

22. 6240÷48+63×48

23. 950-28×6+666

24. 86×(35+117÷9)

25. 2500+(360-160÷4)

26. 16×4+6×3

27.39÷3+48÷6

28.24×4-42÷3

29.7×6-12×3

30.56÷4+72÷8

(1) (-9)-(-13)+(-20)+(-2)

(2) 3+13-(-7)/6

(3) (-2)-8-14-13

(4) (-7)*(-1)/7+8

(5) (-11)*4-(-18)/18

(6) 4+(-11)-1/(-3)

(7) (-17)-6-16/(-18)

(8) 5/7+(-1)-(-8)

(9) (-1)*(-1)+15+1

(10) 3-(-5)*3/(-15)

(11) 6*(-14)-(-14)+(-13)

(12) (-15)*(-13)-(-17)-(-4)

(13) (-20)/13/(-7)+11

(14) 8+(-1)/7+(-4)

(15) (-13)-(-9)*16*(-12)

(16) (-1)+4*19+(-2)

(17) (-17)*(-9)-20+(-6)

(18) (-5)/12-(-16)*(-15)

(19) (-3)-13*(-5)*13

(20) 5+(-7)+17-10

(21) (-10)-(-16)-13*(-16)

(22) (-14)+4-19-12

(23) 5*13/14/(-10)

(24) 3*1*17/(-10)

(25) 6+(-12)+15-(-15)

(26) 15/9/13+(-7)

(27) 2/(-10)*1-(-8)

(28) 11/(-19)+(-14)-5

(29) 19-16+18/(-11)

(30) (-1)/19+(-5)+1

有理数混合运算50题计算方法

有理数加减混合运算,求简便过程 。并且教教这类题如何算

32.76+17.24-113.76-19.24

=(+32.76)+(+17.24)-(+113.76)-(+19.24)

=[(+32.76)-(+113.76)]+[(+17.24)-(+19.24)]

=(-81)+(-2)

=-83

这类题目,根据题目中的资料特征,把两个数相加或相减能得到整数的结合在一起就比较简便了。

求10题有理数的加减混合运算

(-3)-(-2.5)+(-0.5)-(+6)

12+11-8+39

45-9-91+5;

(5-6)-(7-9)

分别根据下列条件求代数式x-y-z+w的值: (1)x=-3,y=-2,z=0,w=5;

(2)x=0.3,y=-0.7,z=1.1,w=-2.1;

已知3a=a+a+a,分别根据下列条件求代数式3a的值: (1)a=-1;

(2)a=-2;

(3)a=-3;

(4)a=-0.5. 有理数加减混合运算的计算步骤如下:1. 先计算括号内的运算,按照先乘除后加减的原则进行计算。2. 将括号内的结果代入原式中,按照先乘除后加减的原则进行计算。3. 最后得到的结果即为有理数加减混合运算的答案。例如,计算表达式:3/4 + (2/3 - 1/2) × 5/61. 先计算括号内的运算:2/3 - 1/2 = (4/6) - (3/6) = 1/62. 将括号内的结果代入原式中:3/4 + 1/6 × 5/6 = 3/4 + 5/363. 按照先乘除后加减的原则进行计算:3/4 + 5/36 = 27/36 + 5/36 = 32/36 = 8/9因此,表达式3/4 + (2/3 - 1/2) × 5/6的结果为8/9。

有理数混合运算50题难

很多同学都认为数学计算很难,我整理了一些有理数的混合运算题,大家一起来看看吧。

有理数混合运算

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)

5+21*8/2-6-59

68/21-8-11*8+61

-2/9-7/9-56

4.6-(-3/4+1.6-4-3/4)

有理数混合运算50题(有理数混合运算50题含答案)