第1个回答 2009-01-21
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)
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
45. 6-1.6÷4= 5.38+7.85-5.37
46. 7.2÷0.8-1.2×5
47. 6.5×(4.8-1.2×4)
48. 1 0.15-10.75×0.4-5.7
49. 5.8×(3.87-0.13)+4.2×3.74
50. 32.52-(6+9.728÷3.2)×2.5本回答被提问者采纳
第2个回答 2009-01-21
450-450÷18×15
3÷2.5+0.45×4.8
4.2÷[2.5-0.4×(2 .8 -1.05)]
205×4.4
15 -5.375-4
886%×2 +8.86×6.5+8.86
3000-450×14÷18
〔(8 —4.625)÷(2.4+1 )〕×50%
25.5×(0.32÷0.4)+8.6
6.8×4.5÷(3.2 - 2.95)
(13.68 - 8.4×1.05) ÷0.36
2.8×6.5÷(5.2- 4.95)
21.6×(1.46÷0.2 - 6.7)
45.55-(6.82+15.55) 34.52-17.87-12.23 6.43-(1.4-0.57)
23.75-8.64-3.46 17.83-9.5-7.83-0.5 5.38+88.2-2.38+1.8
27.38-5.34+2.62-4.66 21.63-(8.5+9.63) 7.5-2.45+7.5+2.45
0.9+0.99+0.999 5.09-(0.09+1.23) 9.36-(4.36-3.5)
第3个回答 2009-01-21
1. 5/7 × 3/25 + 3/7
2. ( 6.8-6.8×0.55)÷8.5
3. 1/5 × 2/3 + 5/6
4. 7 × 5/49 + 3/14
5.12×6÷(12-7.2)-6