16.7×2.1+10.8怎样简便计算
问题描述:
16.7×2.1+10.8怎样简便计算
答
16.7×2.1+10.8
=16.7*(2+0.1)+10.8
=16.7*2+16.7*0.1+10.8
=33.4+10.8+1.67
=44.2+1.67
=45.87