38.45-(29.96+8.45)用简便方法计算
问题描述:
38.45-(29.96+8.45)用简便方法计算
答
38.45-29.96-8.45 先算38.45-8.45得30再30-29.96=0.04
38.45-(29.96+8.45)用简便方法计算
38.45-29.96-8.45 先算38.45-8.45得30再30-29.96=0.04