Question

36×56+72×73-72的简便算法是什么？

Answer 1

36×56+72×73-72
=72×（28+73-1）
=72×100
=7200

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Answer 2

36×56+72×73-72
=36x2x28+72x73-72
【提取72】
=72x(28+73-1)
=72x100
=7200

Answer 3

计算如下：
36×56+72×73-72
​=36×56+(72×73-72)
=36×56+72×72
=72×28+72×72
=72×(28+72)
=72×100
=7200

Answer 4

36×56+72×73-72的简便算法是：
36×56+72×73-72
=36×2×28+72×73-72
=72×28+72×73-72
=72×（28+73-1）
=72×（28+72）
=72×100
=7200

Answer 5

这样计算
=28x72+72x73-72
=72x（28+73-1）
=72x100
=7200
。。。