9.3剩以2.75加0.275乘以71怎样简便算法?
问题描述:
9.3剩以2.75加0.275乘以71怎样简便算法?
答
9.3*2.75+0.275*71
=9.3*2.75+2.75*7.1
=2.75(9.3+7.1)
=2.75*16.4
=45.1