12 125x5x8的简便计算

12*125*5*8=(12*5)*(125*8)=60*1000=60000

125x5x8=125x8x5=1000x5=5000

(12x125)x(5x8)=(12*5)*(125*8)=60*1000=60000

(1.25+12.5+125)*8=1.25*8+12.5*8+125*8=10+100+1000=1110

1.25x8x1.25/8=1.25x1.25=5/4x5/4=25/16=1.5625=16分之25

这算式的简便计算如下:12*8*125=12*(8*125)=12*1000=12000

5x9x125x2x8 =(5x2)x(8x125)x9 =10x1000x9 =900005x9x125x2x8 =(5x2)x(8x125)x9 =10x1000x9 =90000

(125*12)*8=(125*8)*12=1000*12=12000

(125x12 )x8=125*8*12=1000*12=12000

(-4)x8x(-25)xo.1x(-o.125)x1o=(-4)x(-25)x0.1x10x8x(-0.125)=100x1x(-1)=-100

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