怎樣簡便就怎樣算.
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1-
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(
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31×
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| 5 |
| 7 |
| 4 |
| 5 |
| 17 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
| 7 |
| 9 |
| 4 |
| 5 |
| 7 |
| 9 |
| 1 |
| 5 |
| 7 |
| 9 |
| 4 |
| 5 |
| 1 |
| 5 |
| 7 |
| 9 |
| 3 |
| 5 |
| 7 |
| 15 |
| 5 |
| 7 |
| 21 |
| 25 |
| 3 |
| 5 |
| 2 |
| 5 |
| 3 |
| 8 |
| 4 |
| 7 |
| 3 |
| 8 |
| 4 |
| 7 |
| 5 |
| 7 |
| 4 |
| 5 |
| 4 |
| 7 |
| 7 |
| 30 |
| 7 |
| 30 |
| 7 |
| 30 |
| 7 |
| 30 |
| 7 |
| 30 |
科目:小學數學 來源: 題型:
| 168-52-48 | 125×88 | 1300÷25÷4 |
| 688-534+112 | 8×(29×l25) | 156×l0l-156 |
| 3000÷125÷8 | 58×72+28×58 | 688-(534-112) |
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