问题标题:
3.35×6.47×2+6.7×3.6简便计算
问题描述:
3.35×6.47×2+6.7×3.6简便计算
冯向前回答:
3.35×6.47×2+6.7×3.6
=6.7×6.47+6.7×3.6
=6.7x(6.47+3.6)
=6.7x10.7
=71.69
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