五年级分数简单简便计算60道
答案:5 悬赏:20 手机版
解决时间 2021-03-27 06:10
- 提问者网友：未信
- 2021-03-27 01:22
五年级分数简单简便计算60道
最佳答案
- 五星知识达人网友：行雁书
- 2021-03-27 02:53
2/3-7/8+1/3
=(2/3+1/3)-7/8
=1-7/8
=1/8
5/6-(3/7-1/6)
=(5/6+1/6)-3/7
=1-3/7
=4/7
1-1/3-2/3
=1-(1/3+2/3)
=1-1
=0
1+3/5-1/10
=1+6/10-1/10
=1+1/2
=1又1/2
3/8-12/13+5/8
=3/8+5/8-12/13
=1-12/13
=1/13
1-(1/2-3/4)
=1+3/4-2/4
=1+1/4
=5/4
1-1/2-1/4
=1/2-1/4
=2/4-1/4
=1/4
2/7-8/9+5/7
=(2/7+5/7)-8/9
=1-8/9
=1/9
2-1/4-3/4
=2-(1/4+3/4)
=2-1
=1
1/2-(3/8-1/2)
=1/2+1/2-3/4
=1-3/8
=5/8
3/7-5/8+4/7
=3/7+4/7-5/8
=1-5/8
=3/8
1/2-1/3+1/2
=1/2+1/2-1/3
=1-1/3
=2/3
3/4-(1/2-1/4)
=3/4+1/4-1/2
=1-1/2
=1/2
3/5+4/5-2/5
=7/5-2/5
=1
1/6-(3/4-5/6)
=1/6+5/6-3/4
=1-3/4
=1/4
1/9-(1/8-8/9)
=1/9+8/9-1/8
=1-1/8
=7/8
1/2-(3/5-1/2)
=1/2+1/2-3/5
=1-3/5
=2/5
=(2/3+1/3)-7/8
=1-7/8
=1/8
5/6-(3/7-1/6)
=(5/6+1/6)-3/7
=1-3/7
=4/7
1-1/3-2/3
=1-(1/3+2/3)
=1-1
=0
1+3/5-1/10
=1+6/10-1/10
=1+1/2
=1又1/2
3/8-12/13+5/8
=3/8+5/8-12/13
=1-12/13
=1/13
1-(1/2-3/4)
=1+3/4-2/4
=1+1/4
=5/4
1-1/2-1/4
=1/2-1/4
=2/4-1/4
=1/4
2/7-8/9+5/7
=(2/7+5/7)-8/9
=1-8/9
=1/9
2-1/4-3/4
=2-(1/4+3/4)
=2-1
=1
1/2-(3/8-1/2)
=1/2+1/2-3/4
=1-3/8
=5/8
3/7-5/8+4/7
=3/7+4/7-5/8
=1-5/8
=3/8
1/2-1/3+1/2
=1/2+1/2-1/3
=1-1/3
=2/3
3/4-(1/2-1/4)
=3/4+1/4-1/2
=1-1/2
=1/2
3/5+4/5-2/5
=7/5-2/5
=1
1/6-(3/4-5/6)
=1/6+5/6-3/4
=1-3/4
=1/4
1/9-(1/8-8/9)
=1/9+8/9-1/8
=1-1/8
=7/8
1/2-(3/5-1/2)
=1/2+1/2-3/5
=1-3/5
=2/5
全部回答
- 1楼网友：英雄的欲望
- 2021-03-27 05:35
1, 18*7/19=(19-1)*7/19=7-1/19
2, 80*7/79=(79+1)*7/79=7+1/79
3, 78*5/79=(79-1)*5/79=5-1/79
4, 1/2+1/6+1/12+1/20+1/30+1/42
=1/2+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)
=6/75, 1/2+1/6+1/12+1/20+1/30+1/42
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/6-1/7)
=1-1/7
=6/7
还有50道题，不过没有答案
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
还有50道题，不过没有答案
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 × 2
2, 80*7/79=(79+1)*7/79=7+1/79
3, 78*5/79=(79-1)*5/79=5-1/79
4, 1/2+1/6+1/12+1/20+1/30+1/42
=1/2+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)
=6/75, 1/2+1/6+1/12+1/20+1/30+1/42
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/6-1/7)
=1-1/7
=6/7
还有50道题，不过没有答案
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
还有50道题，不过没有答案
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 × 2
- 2楼网友：鸽屿
- 2021-03-27 05:01
1.5/2-（3/2+4/5）2.7/8+（1/8+1/9）3.5/6+（1/2+2/3）4.9/7-（2/7-10/21）5.3/7+49/9+4/76.8/9+15/36+3/277.5/2-（3/2+4/5）8.7/8+（1/8+1/9）9.9/7-（2/7-10/21）10.1/5+（3/7+8/10）1.1/3+3/4+1/52.3/8+8/3-1/23.5/6+1/12+3/44.30/46-1/2+7/235.8/11+2/6+7/336.19/8-1/2-3/47.7/25+3/10-2/58.18/121-1/2+9/119.6/17-1/51-1/3410.8/15+7/3-8/51.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-（3/2+4/5）8.7/8+（1/8+1/9）9.9×5/6+5/610.3/4×8/9-1/311.7×5/49+3/1412.6×（1/2+2/3）13.8×4/5+8×11/514.31×5/6–5/615.9/7-（2/7–10/21）16.5/9×18–14×2/717.4/5×25/16+2/3×3/418.14×8/7–5/6×12/1519.17/32–3/4×9/2420.3×2/9+1/321.5/7×3/25+3/722.3/14××2/3+1/623.1/5×2/3+5/624.9/22+1/11÷1/225.5/3×11/5+4/326.45×2/3+1/3×1527.7/19+12/19×5/628.1/4+3/4÷2/329.8/7×21/16+1/230.101×1/5–1/5×211.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-（3/2+4/5）8.7/8+（1/8+1/9）9.9×5/6+5/610.3/4×8/9-1/311.7×5/49+3/1412.6×（1/2+2/3）13.8×4/5+8×11/514.31×5/6–5/615.9/7-（2/7–10/21）16.5/9×18–14×2/717.4/5×25/16+2/3×3/418.14×8/7–5/6×12/1519.17/32–3/4×9/2420.3×2/9+1/321.5/7×3/25+3/722.3/14××2/3+1/623.1/5×2/3+5/624.9/22+1/11÷1/225.5/3×11/5+4/326.45×2/3+1/3×1527.7/19+12/19×5/628.1/4+3/4÷2/329.8/7×21/16+1/230.101×1/5–1/5×2160题了再加点1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-（3/2+4/5）8.7/8+（1/8+1/9）9.9×5/6+5/610.3/4×8/9-1/311.7×5/49+3/1412.6×（1/2+2/3）13.8×4/5+8×11/514.31×5/6–5/615.9/7-（2/7–10/21）16.5/9×18–14×2/717.4/5×25/16+2/3×3/418.14×8/7–5/6×12/1519.17/32–3/4×9/2420.3×2/9+1/321.5/7×3/25+3/722.3/14××2/3+1/623.1/5×2/3+5/624.9/22+1/11÷1/225.5/3×11/5+4/326.45×2/3+1/3×1527.7/19+12/19×5/628.1/4+3/4÷2/329.8/7×21/16+1/230.101×1/5–1/5×21
- 3楼网友：大漠
- 2021-03-27 04:15
①5/3+4/3+5/2+4/1
②8/5+65/49+8/3+65/16
③9/1+8/7+9/8+8/1
④3/1+8/7+3/2
⑤7/2+5/3+7/5+5/2
⑥10/3+19/2+10/7
⑦13/5+12/1+13/8
⑧24/13+25/9+24/11+25/16
⑨9/7+8/3+9/2+8/5
⑩11/2+19/8+11/9+19/11
②8/5+65/49+8/3+65/16
③9/1+8/7+9/8+8/1
④3/1+8/7+3/2
⑤7/2+5/3+7/5+5/2
⑥10/3+19/2+10/7
⑦13/5+12/1+13/8
⑧24/13+25/9+24/11+25/16
⑨9/7+8/3+9/2+8/5
⑩11/2+19/8+11/9+19/11
- 4楼网友：玩家
- 2021-03-27 04:09
①5/3+4/3+5/2+4/1
②8/5+65/49+8/3+65/16
③9/1+8/7+9/8+8/1
④3/1+8/7+3/2
⑤7/2+5/3+7/5+5/2
⑥10/3+19/2+10/7
⑦13/5+12/1+13/8
⑧24/13+25/9+24/11+25/16
⑨9/7+8/3+9/2+8/5
⑩11/2+19/8+11/9+19/11
②8/5+65/49+8/3+65/16
③9/1+8/7+9/8+8/1
④3/1+8/7+3/2
⑤7/2+5/3+7/5+5/2
⑥10/3+19/2+10/7
⑦13/5+12/1+13/8
⑧24/13+25/9+24/11+25/16
⑨9/7+8/3+9/2+8/5
⑩11/2+19/8+11/9+19/11
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