求百分数与分数混合简便运算50道,没有别瞎说
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发布时间:2022-10-16 15:16
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热心网友
时间:2023-10-20 09:28
<1> 1/4 * 39 + 3/4 * 27 关于这类型的还有
1/6 * 35 + 5/6 * 17
解:=3/4 * 13 + 3/4 * 27
=3/4 *(13+27)
=3/4 * 40
=30
<2> 55 * 55/56
解:=(56-1) * 55/56 57 * 33/58
= 56 * 55/56 -1 * 55/56
=55- 55/56
=54 1/56
关于这类型的还有
<3>2又4/5 * 3/7 + 3/5 * 1/7 5/9 * 79又16/17 +50*1/9+1/9*5/17
= 2又4/5 * 3/7 1/5 * 3/7
=3/7 * (2又4/5 + 1/5)
=3/7 * 3
=9/7
热心网友
时间:2023-10-20 09:29
. 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
31.1049 × (1-75%)