3.75*735-3/8*5750+16.2*62.5简便运算.

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3.75*735-3/8*5750+16.2*62.5简便运算.

3.75*735-3/8*5750+16.2*62.5简便运算.
3.75*735-3/8*5750+16.2*62.5简便运算.

3.75*735-3/8*5750+16.2*62.5简便运算.
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

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

难得算。。。