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http://wenku.baidu.com/view/a7c7dd4bcf84b9d528ea7ada.html一、1.5×4= 2.5×4= 0.75+0.8=
0.13×4= 2.4-0.8= 8.5×100=
5.4÷10= 4.2×1000= 3.2÷100=
0.45÷0.15= 3.6÷0.1= 0.18×0.3=
1.2÷0.3= 0.49÷0.7= 8.5÷1.7=
0.04×25=
二、(1)6.25÷0.25×0.6
(2)68.04÷(0.21×3.6)
(3)0.486+0.01+3.99
(4)19.75-6.45-3.55
(5)2.02×(1.027÷0.26)
(6)1.25×11×4×0.8
(7)90÷25÷4
(8)36÷(97.28÷0.32)(保留两位小数)
三、0.2×4.3= 3.7 + 3= 0.72×100= 3.2×0.1= 2 + 4.8=
7×0.6= 6×0.15= 9.7×0.01= 2.4×5= 0.87-0.7=
3.67÷10= 0.2 + 0.99= 0.72÷8= 125×0.8= 1-0.99=
220-180= 0.4×0.07= 9.34÷100=
四、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
0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4
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) (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
参考资料:http://wenku.baidu.com/view/a7c7dd4bcf84b9d528ea7ada.html