5.34*23-534*1.3 简便脱式计算
问题描述:
5.34*23-534*1.3 简便脱式计算
答
应该是5.34*23-53.4*1.3
=53.4*2.3-53.4*1.3
=53.4*(2.3-1.3)
=53.4*1
=53.4