要有过程和答案,注:/为几分之几

来源:百度知道 编辑:UC知道 时间:2024/05/27 00:48:34
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

我就是冲分来滴~~好辛苦,你可要给我分啊!

1. 3/7 × 49/9 - 4/3
=(3×49)/(7×9)-4/3
=147/63-4/3
=147/63-84/63
=63/63
=1

2. 8/9 × 15/36 + 1/27
=(8×15)/(9×36)+ 1/27
=120/324 + 12/324
=132/324
=43/108

3. 12× 5/6 – 2/9 ×3
=10 - 2/3
=28/3

4. 8× 5/4 + 1/4
=10 + 1/4
=41/4

5. 6÷ 3/8 – 3/8 ÷6
=16 - 1/16
=255/16

6. 4/7 × 5/9 + 3/7 × 5/9
=20/63 + 15/63
=35/63
=5/9

7. 5/2 -( 3/2 + 4/5 )
=25/10 - 23/10
=2/10
=1/5

8. 7/8 + ( 1/8 + 1/9 )
=63/72 + 17/72
=80/72
=10/9

9. 9 × 5/6 + 5/6
=(9+1)×5/6
=10×5/6
=25/3

10. 3/4 × 8/9 - 1/3
=24/36 - 12/36
=12/36
=1/3

11. 7 × 5/49 + 3/14
=5/7 + 3/14
=10/14 + 3/14
=13/14

12. 6 ×( 1/2 + 2/3 )
=6×5/6
=5

13. 8 × 4/5 + 8 × 11/5
=32/5 + 88/5
=120/5
=24