7.28*333+72.8*66.6+7.28=?要用乘法分配率
问题描述:
7.28*333+72.8*66.6+7.28=?要用乘法分配率
答
7.28*333+72.8*66.6+7.28
=7.28*333+7.28*666+7.28*1
=7.28*(333+666+1)
=7.28*1000
=7280