用简便算法算72乘0.98+7.2乘0.2
问题描述:
用简便算法算72乘0.98+7.2乘0.2
答
72乘0.98+7.2乘0.2
=72×0.98+72×0.02
=72×(0.98+0.02)
=72×1
=72