27.16-8.22+(72.48-21.78)=多少?简算,脱式计算
问题描述:
27.16-8.22+(72.48-21.78)=多少?简算,脱式计算
答
27.16-8.22+(72.48-21.78)
=27.16+72.48-(8.22+21.78)
=69.64