3.4乘以9+99乘以0.6怎么简便计算
问题描述:
3.4乘以9+99乘以0.6怎么简便计算
答
3.4乘以9+99乘以0.6
=3.4x9+6.6x9
=9x(3.4+6.6)
=9x10
=90
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