脱式计算与简便运算
0 0 |
78-4.5-22-45
6 6 |
2-(6
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0 0 |
6-
5 5 |
〔1-(
| ||||||||||||||||||||||||
|
|
5+3.6×2.5÷0.48= 23.75 23.75 | ||||||||||||||||||||||||
22-
21 21 |
299÷(299+
|
[
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3.6×2
|
|
| 1 |
| n(n+1) |
| 1 |
| n |
| 1 |
| n+1 |
| 7 |
| 13 |
| 6 |
| 13 |
| 3 |
| 5 |
| 7 |
| 13 |
| 6 |
| 13 |
| 7 |
| 13 |
| 6 |
| 13 |
| 1 |
| 2 |
| 5 |
| 12 |
| 77 |
| 12 |
| 30 |
| 12 |
| 1 |
| 3 |
| 47 |
| 12 |
| 1 |
| 3 |
| 47 |
| 36 |
| 25 |
| 36 |
| 4 |
| 7 |
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 4 |
| 4 |
| 7 |
| 3 |
| 7 |
| 4 |
| 7 |
| 3 |
| 7 |
| 5 |
| 3 |
| 1 |
| 2 |
| 1 |
| 6 |
| 5 |
| 6 |
| 1 |
| 6 |
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 12 |
| 1 |
| 18 |
| 5 |
| 8 |
| 3 |
| 36 |
| 2 |
| 36 |
| 8 |
| 5 |
| 1 |
| 36 |
| 8 |
| 5 |
| 35 |
| 36 |
| 8 |
| 5 |
| 14 |
| 9 |
| 9 |
| 8 |
| 3 |
| 13 |
| 9 |
| 26 |
| 1 |
| 3 |
| 9 |
| 8 |
| 3 |
| 13 |
| 26 |
| 9 |
| 1 |
| 3 |
| 9 |
| 8 |
| 2 |
| 3 |
| 1 |
| 3 |
| 9 |
| 8 |
| 2 |
| 3 |
| 1 |
| 3 |
| 9 |
| 8 |
| 1 |
| 8 |
| 5 |
| 11 |
| 1 |
| 7 |
| 6 |
| 11 |
| 5 |
| 11 |
| 1 |
| 7 |
| 1 |
| 7 |
| 6 |
| 11 |
| 5 |
| 11 |
| 6 |
| 11 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 3 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 299 |
| 300 |
| 299 |
| 300 |
| 300 |
| 299×300+299 |
| 300 |
| 299×(300+1) |
| 300 |
| 301 |
| 13 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
| 3 |
| 4 |
| 13 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
| 3 |
| 4 |
| 5 |
| 7 |
| 3 |
| 4 |
| 2 |
| 7 |
| 3 |
| 4 |
| 3 |
| 14 |
| 8 |
| 25 |
| 3 |
| 5 |
| 2 |
| 13 |
| 1 |
| 1x2 |
| 1 |
| 2x3 |
| 1 |
| 3x4 |
| 1 |
| 99x100 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 99 |
| 1 |
| 100 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 99 |
| 1 |
| 100 |
| 1 |
| 100 |
| 99 |
| 100 |
| 25 |
| 36 |
| 14 |
| 9 |
| 1 |
| 8 |
| 1 |
| 7 |
| 300 |
| 301 |
| 3 |
| 14 |
| 2 |
| 13 |
| 99 |
| 100 |
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