2.74乘以9.9加0.274怎么简便计算?急!
问题描述:
2.74乘以9.9加0.274怎么简便计算?急!
快题目!不会写的向我这样写1111乘3333等于2222加44444
答
2.74*9.9+0.274
= 2.74*(10-0.1)+0.274
=27.4 -0.274+0.274
=27.4