分數加減法練習題

時間 2021-09-08 01:23:07

1樓:g肯定

有理數的減法有(1)正數與正數之間的減法 這個就相當於簡單的算術題

(2)負數與負數之間的減法 這個我是這麼理解的 相當於帶了-號的加法

(3)負數與正數之間的減法 先判斷是正數大還是負數大來判斷符號(如-7比5大,14比-9大)然後進行減法

2樓:我是龍的傳人

異分母分數加減法習題:

3/8+7/10+5/8=17/10

7/8-(1/8+3/4)=0

4/7+1/6-4/7=1/6

2-7/9-2/9=1

3/5+7/8+2/5=15/8

7/9-(1/9+1/3)=1/3

1/4+(2/5+3/4)=7/5

5/6-3/10+1/6-7/10=0

3/4+1/6-2/3=1/4

7/8-1/4+4/9=77/72

1-1/3+2/7=20/21

1/2+4/5-3/10=1

5/6-(2/3-1/9)=5/18

9/10-(3/4+1/8)=1/40

1/2+2/3-3/4=5/12

7/8-1/6+1/4=23/24

1-(3/4-2/9)=17/36

9/10-1/5-1/2=1/5

3樓:匿名使用者

五分之二+七分之四=?

這算練習題嗎?

如果算的話,只要分母不同,分子隨便,都可以是異母分數,配個加號,太多了。。。。。。

4樓:寶寶

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÷7.22|

5樓:杞素斯淳雅

給你寫在紙上發圖可以嗎

6樓:春衫薄

3/4-1/2= 1-1/8= 11/12-1/6= 1/5+1/4= 1/2-1/3=

5/6-1/3= 3-5/6=

有點少 嘿嘿

7樓:藍冰諾雪

你總得把問題說出來吧!

8樓:黯然淡淡

他叫你們給練習題他啊~!!!!

笨蛋....我沒有練習題哦

9樓:

7/25×4/9+7/25×5/9

=7/25×(4/9+5/9)

=7/25×1

=7/25

60×(1/12+1/15+1/4)

=60×1/12+60×1/15+60×1/4=5+4+15

=24(5/12-3/8)×72

=5/12×72-3/8×72

=30-27

=36/7-5/24÷7/12

=6/7-5/24×12/7

=12/14-5/14

=7/14

=1/2

[3/4×(7/16-1/4)]÷9/13=3/4×(7/16-4/16)×13/9=1/4×3/16×13/3

=13/64

2/3-7/8+1/3

=(2/3+1/3)-7/8

=1-7/8

=1/8

5/6-(3/7-1/6)

=(5/6+1/6)-3/7

=1-3/7

=4/7

1-1/3-2/3

=1-(1/3+2/3)

=1-1

=01+3/5-1/10

=1+6/10-1/10

=1+1/2

=1又1/2

3/8-12/13+5/8

=3/8+5/8-12/13

=1-12/13

=1/13

1-(1/2-3/4)

=1+3/4-2/4

=1+1/4

=5/4

1-1/2-1/4

=1/2-1/4

=2/4-1/4

=1/4

2/7-8/9+5/7

=(2/7+5/7)-8/9

=1-8/9

=1/9

2-1/4-3/4

=2-(1/4+3/4)

=2-1

=11/2-(3/8-1/2)

=1/2+1/2-3/4

=1-3/8

=5/8

2.64×1.7-2.64×0.7

=2.64×(1.7-0.7)

=2.64×1

=2.64

31.5×1.07-3.15×0.7

=3.15×10.7-3.15×0.7

=3.15×(10.7-0.7)

=3.15×10

=31.5

2.7×5.7-2.7+5.3×2.7

=2.7×(5.7-1+5.3)

=2.7×10

=270.625÷0.125×0.8

=(0.625×0.8)×8÷(0.125×8)=0.5×8÷1

=418.6×6.1+3.9×18.6

=18.6×(6.1+3.9)

=18.6×10

=186

0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=150.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

300÷125÷8

=300÷(125×8)

=300÷1000

=0.3

396-96-172-28

=(396-96)-(172+28)

=300-200

=100

125x24

=125x8x3

=1000x3

=3000

26x15

=(20+6)x15

=20x15+6x15

=300+90

=390

25x99x4

=25x4x99

=100x99

=9900

250x32

=250x4x8

=1000x8

=8000

(98+98+98+98)x25

=4x98x25

=4x25x98

=100x98

=9800

3/4÷5/8×3/10

=3/4×8/5×3/10

=9/5×1/5

=9/25

1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5

=1/5

4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100

=482/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8

=5/8

3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7

=4/7

3.2x0.125x2.5

=0.125x8x(0.4x2.5)

=1x1

=10.4×125×25×0.8

=(0.4×25)×(125×0.8)

=10×100

=1000

1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

9123-(123+8.8)

=9123-123-8.8

=9000-8.8

=8991.2

1.24×8.3+8.3×1.76

=8.3×(1.24+1.76)

=8.3×3

=24.9

9999×1001

=9999×(1000+1)

=9999×1000+9999×1

=10008999

14.8×6.3-6.

3×6.5+8.3×3.

7=(14.8-6.5)×6.

3+8.3×3.7=8.

3×6.3+8.3×3.

7=8.3×(6.3+3.7)

=8.3×10

=831.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

933-157-43

=933-(157+43)

=933-200

=733

4821-998

=4821-1000+2

=3823

32×125×25

=4×8×125×25

=(4×25)×(8×125)

=100×1000

=100000

1.8+18÷1.5-0.5×0.3

=1.8+12-0.15

=13.8-0.15

=13.65

6.5×8+3.5×8-47

=52+28-47

=80-47

=333.7x2.56-2.3

=9.472-2.3

=7.172

1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5

=1/5

4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100

=482/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8

=5/8

3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7

=4/7

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