下面各题怎样简便就怎样计算．
| 15.64﹣2.53﹣7.47 |
2.5×1.4×4 |
8.3×5.7+5.7×1.7 |
| 4.7+7.69+5.3+2.31 |
0.2×9.9+0.02 |
38×0.3﹣7.2 |
下面各题怎样简便就怎样计算．
| 15.64﹣2.53﹣7.47 |
2.5×1.4×4 |
8.3×5.7+5.7×1.7 |
| 4.7+7.69+5.3+2.31 |
0.2×9.9+0.02 |
38×0.3﹣7.2 |
试题篮
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