| 脫式計算(能簡算的要簡算) 2.4×58+84×1.2 |
112÷55
| ||||||||
38×
|
| ||||||||
|
| 1 |
| 23 |
| 36 |
| 37 |
| 36 |
| 37 |
| 36 |
| 37 |
| 36 |
| 37 |
| 36 |
| 37 |
| 36 |
| 37 |
| 4 |
| 29 |
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
| 3 |
| 8 |
| 4 |
| 29 |
| 5 |
| 8 |
| 5 |
| 58 |
| 55 |
| 64 |
| 55×64+55 |
| 64 |
| 55×(64+1) |
| 64 |
| 55×65 |
| 64 |
| 64 |
| 55×65 |
| 7168 |
| 3575 |
| 8 |
| 17 |
| 1 |
| 23 |
| 9 |
| 17 |
| 8 |
| 17 |
| 1 |
| 23 |
| 1 |
| 23 |
| 9 |
| 17 |
| 1 |
| 23 |
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 23 |
| 1 |
| 23 |
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