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0.7x0.25x0.45怎样简算

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0.7x0.25x0.45怎样简算
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答案和解析
0.7×0.25×0.45
=0.175×4×0.25×0.45
=0.175×[4×0.25]×0.45
=0.175×1×0.45
=0.175×0.45
=0.07875