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、2/5+4/15-2/5 32、 6/7×5/8+3/8÷7/6
33、(7/11-3/8)×88 34、 13—48×(1/12+1/16)
35、4/5÷3+2/3×4/5 36、 2/5+1/2×3/5+1/10
37、12/13×3/7+4/7×12/13+12/13 38、48×(7/12+2)÷2/3
39、23- 8/9×3/4÷1/27 40、5/9×7+5/9×11 1.18.1+(3-0.299÷0.23)×1
2.(6.8-6.8×0.55)÷8.5
3.0.12× 4.8÷0.12×4.8
4.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
5.6-1.6÷4= 5.38+7.85-5.37=
6.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
7.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
8.10.15-10.75×0.4-5.7
9.5.8×(3.87-0.13)+4.2×3.74
10.32.52-(6+9.728÷3.2)×2.5
11.[(7.1-5.6)×0.9-1.15] ÷2.5
12.5.4÷[2.6×(3.7-2.9)+0.62]
13.12×6÷(12-7.2)-6
14.12×6÷7.2-6
15.33.02-(148.4-90.85)÷2.5