41又1/3乘3/4+51又1/4乘4/5简便

问题描述:

41又1/3乘3/4+51又1/4乘4/5简便

41又1/3×3/4+51又1/4×4/5
=﹙40+4/3﹚×3/4+﹙50+5/4﹚×4/5
=30+1+40+1
v72.在详细点原式=﹙40+4/3﹚×3/4+﹙50+5/4﹚×4/5 =40×3/4+4/3×3/4+50×4/5+5/4×4/5 =30+1+40+1 =72.