
31.8x0.65+3.18x3.5 用最简便方法是怎么计算?
1个回答
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31.8x0.65+3.18x3.5
=3.18x10x0.65+3.18x3.5
=3.18x6.5+3.18x3.5
=3.18x(6.5+3.5)
=3.18x10
=31.8
=3.18x10x0.65+3.18x3.5
=3.18x6.5+3.18x3.5
=3.18x(6.5+3.5)
=3.18x10
=31.8
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