12.3乘84加123.16简便计算
问题描述:
12.3乘84加123.16简便计算
答
12.3乘84加123.16简便计算
题目有误,应为:
12.3X84+123X1.6
=123X8.4+123X1.6
=123X(8.4+1.6)
=123X10
=1230