求38又3/4-15.38+61.25-4.62的简便运算
问题描述:
求38又3/4-15.38+61.25-4.62的简便运算
答
38又3/4-15.38+61.25-4.62
=38.75+61.25-(15.38+4.62)
=100-20
=80