谁有小学六年级的四则混合运算题啊,最好包含一些简算题的,跪求~~~

不要太难算的(要十道以上),最好有答案~~~(对不起啊大家,悬赏不太高,但偶是真的跪求啊!)

题:5/9X(9/5+18) 5/9X5/6+4/9÷6/5
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6

13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14

(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
5/7×53+1/7×85
=5/7×53+5/7×17
=5/7×(53+17)
=5/7×70
=50
温馨提示:答案为网友推荐,仅供参考
第1个回答  2011-08-26
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
第2个回答  2011-08-26
1, 12× 5/6 – 2/9 ×3
2, 8× 5/4 + 1/4
3. 6÷ 3/8 – 3/8 ÷6
4. 4/7 × 5/9 + 3/7 × 5/9
5. 5/2 -( 3/2 + 4/5 )
第3个回答  2011-08-27
1、5/9X(9/5+18) =5/9*9/5+5/9*18=1+10=11;
2、13/14-15/28÷5/8=13/14-15/28*8/5=13/14-12/14=25/14;
3、(5/6-3/4)÷3/8=(10/12-9/12)*8/3=1/12*8/3=8/36=2/9;
4、5/9X5/6+4/9÷6/5=(5/9+4/9)*5/6=5/6
5、4÷4/5-4/5÷4=4*5/4-4/5*1/4=5-1/5=24/5
6、7/11÷[2/5-(1-7/10)]=7/11÷(4/10-3/10)=7/11*10=70/11