数学简算题,一定要简算,
问题描述:
数学简算题,一定要简算,
7/12÷1/6*4/7
[3/4+(1-1/3)*3/8]÷0.04
答
7/12÷1/6×4/7
=7/12×4/7×6
=1/3×6
=2
[3/4+(1-1/3)×3/8]÷0.04
=[3/4+1×3/8-1/3×3/8]÷1/25
=[3/4+3/8-1/8]×25
=[3/4+1/4]*25
=1×25
=25