8.5乘以2.02用简便算法怎么算?.
问题描述:
8.5乘以2.02用简便算法怎么算?.
答
(8+0.5)*(2+0.02)
=8*2+0.5*2+8*0.02+0.5*0.02
=16+1+0.16+0.01
=17.17