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375x8的简便算式

=3.75*8-0.375*8=30-3=27

72*375怎么简算 =8x9x3x125 =(8x125)x(9x3) =1000x27 =27000

0.5x2.33x8=0.5x8x2.33=4*2.33=9,32

783125=(7x3)x(125x8)=21x1000=21000

45x8 =(25+20)x8 =200+160 =360

72x8/71=(71+1)x8/71=8+8/71

先算0.125x8=1再乘3.3=3.3

0.125x72=0.125x8x9=1x9=9

125x24=125x(8+8+8)=125x8+125x8+125x8=1000+1000+1000=3000

(40+2)X25=40X25+2X25=1000+50=1050

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