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73x125的简便运算

简便算法,可以先用125*8=1000然后73*1000=73000

73x125x12=(8x9+1)x125x12=8x125x9x12+125x4x3=1000x108+500x3=108000+1500=109500

88x125 = (8+80)x125 = 8x125+80x125=1000+10000=11000

73000/125=73*(100/125)=73*4=292

原式=125*(8*3) =125*8*3 =3000

72*125 =9*8*125 =9*1000 =9000

73x125=(72+1)x125=72x125+125=8x125x9+125=1000x9+125=9000+125=9125

56X125=7x8x125=7x(8x125)=7x1000=7000

你好:72*125=9*(8*125)=9*1000=9000

88*125=11*8*125=11*1000=11000

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