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125 8 40 25

=(125÷25)*(8/40)=5*(1/5)=1

125*(40-8)*25 =125*32*25 =125*8*4*25 =(125*8)*(4*25) =1000*100 =100000

125*(8+40)*25=125x8x25+125x40x25=1000x25+125x100=25000+12500=37500

125*40+8*25=125*48*25=125*8*2*25*3=1000*50*3=150000

125*括号8+40反括号乘以25的简便运算125*(8+40)*25=125*8**25+125*40*25=25000+125000=150000

解:原式=125*(40*25)+(125*8)*25 =125*1000+25*1000 =1000*(125+25) =150000

25*(40+8)*125=25*40*125+25*8*125=1000*125+1000*25=125000+25000=150000

40*125*8*25=(40*25)*(125*8)=1000*1000=1000000

125乘以40乘以8乘以25=125乘以8乘以40乘以25=1000乘以1000=1000000

8*40*25*125=40*25*(125*8)=100*1000=100 000

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