5.2x20.1这道题怎样简便计算?

如题所述

第1个回答  2016-11-03
5.2x20.1
=5.2x(20+0.1)
=5.2x20+5.2x0.1
=104+0.52
=104.52本回答被网友采纳
第2个回答  2016-11-03
5.2x20.1
=5.2x(20+0.1)
=5.2x20+5.2x0.1
=104+0.52
=104.52
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