六年级数学分数乘法简便运算题.doc

六年级数学分数乘法简便运算题 姓名： 1. 4/71/74/71/7 2. 12(3/4-1/6)3. 12(1/6+1/2) 4. 701/35+401/355. 4/5810 6. 6(1/2+1/3)7. (5/6-2/3)7/9 8. (1/12+1/5)609. 20(1-1/4-1/5) 10. 1/37+2/3711. 3/499+3/4 12. 2/73/41413. 8/927+1/927 14. 2/52/75/815. 1/481/48 16. 20(1/5+1/4)17. (1/2-1/4)12 18. 5/43.6819. (1/8+1/4)16 20. 2/5-2/55/1221. (1/8+1/24)96 22. 17/4101-17/423. 28(4-8/7) 24. (2/3-4/7)2125. 56(1/7-1/8)