7.2*1.47+14.7*0.28的简便算法

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7.2*1.47+14.7*0.28的简便算法7.2*1.47+14.7*0.28的简便算法7.2*1.47+14.7*0.28的简便算法7.2*1.47+14.7*0.28=0.72*14.7+14

7.2*1.47+14.7*0.28的简便算法
7.2*1.47+14.7*0.28的简便算法

7.2*1.47+14.7*0.28的简便算法
7.2*1.47+14.7*0.28
=0.72*14.7+14.7*0.28
=(0.72+0.28)*14.7
=1*14.7
=14.7
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7.2*1.47+14.7*0.28
=(7.2+2.8)*1.47
=10×1.47
=14.7

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