3.6*0.81+0.36*1.9简便计算
问题描述:
3.6*0.81+0.36*1.9简便计算
答
3.6*0.81+0.36*1.9
=3.6*0.81+3.6*0.19
=3.6*(0.81+0.19)
=3.6*1
=3.6