Question

怎样用简便方法计算101x0.52-0.91x52

Answer 1

利用乘法结合律。
算式就是0.52×:（101-91）。

Answer 2

101x0.52-0.91x52
=0.52×（101-91）
=0.52×10
=5.2

Answer 3

101×0.52-0.91×52
=101×0.52-91×0.52
=（101-91）×0.52
=10×0.52
=5.2

Answer 4

101x0.52-0.91x52
=101x0.52-91x0.52
=0.52×（101-91）
=0.52×10
=5.2

Answer 5

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