3.75*735-3/8*5750+16.2*62.5简便运算.
问题描述:
3.75*735-3/8*5750+16.2*62.5简便运算.
答
难得算。。。
答
3.75*735-3/8*5750+16.2*62.5
=0.375(7350-5750)+16.2*62.5
=0.375*1600+62.5*16.2
=0.125*(3*1600+500*16.2)
=1/8*12900
=1612.5
答
30/8 62.5=50/8
原式=1/8*30*735-1/8*5750+1/8*500*16.2
=1/8*(30*735-5750+8100)
=1/8*24400
=3050