脱式计算:5/101×1/2÷2/5 12÷14/4×7/8
问题描述:
脱式计算:5/101×1/2÷2/5 12÷14/4×7/8
答
5/101×1/2÷2/5
=5/202x5/2
=25/404
12÷14/4×7/8
=24/7x7/8
=3