简便计算 5.6×0.25= 和 15-3.2÷0.25
问题描述:
简便计算 5.6×0.25= 和 15-3.2÷0.25
答
5.6×0.25
=5.6÷4×0.25×4
=1.4×1
=1.4
15-3.2÷0.25
=15-3.2×4÷0.25×4
=15-12.8÷1
=2.2