70.3乘3.9+7.03乘61简便计算
问题描述：
70.3乘3.9+7.03乘61简便计算
答
=70.3×3.9+70.3×0.1×61
=70.3×3.9+70.3×6.1
=70.3×(3.9+6.1)
=70.3×10
=703