2.74*9.9+0.274这个怎么简便运算?
问题描述:
2.74*9.9+0.274这个怎么简便运算?
要写完整的!急!
答
2.74*9.9+0.274
=2.74*9.9+2.74*0.1
=2.74*(9.9+0.1)
=2.74*10
=27.4