题目内容
720÷80= 9 9 |
7200÷800= 9 9 |
12×40= 480 480 |
120×40= 4800 4800 |
1200×40= 48000 48000 . |
分析:根据商不变的性质和积的变化规律进行计算.
解答:
解:720÷80=9 | 7200÷800=9 | 12×40=480 |
120×40=4800 | 1200×40=48000. |
点评:考查了商不变的性质及积的变化规律.
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