5.31×8.7+53.1×0.13怎么简算?

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5.31×8.7+53.1×0.13怎么简算?5.31×8.7+53.1×0.13怎么简算?5.31×8.7+53.1×0.13怎么简算?5.31×8.7+53.1×0.13=5.31×8.7+5.3

5.31×8.7+53.1×0.13怎么简算?
5.31×8.7+53.1×0.13怎么简算?

5.31×8.7+53.1×0.13怎么简算?
5.31×8.7+53.1×0.13
=5.31×8.7+5.31×1.3
=5.31×(8.7+1.3)
=5.31×10
=53.1

就相当于5.31乘8.7+5.31乘1.3=5.31*（8.7+1.3）=53.1

=5.31x10x8.7x0.1+53.1x0.13
=53.1x0.87+53.1x0.13
=53.1x(0.87+0.13)
=53.1x1
=53.1

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