70x40x125简便方法

50*70*40=(50*40)*70=2000*70=140000您好,本题已解答,如果满意,请点右上角“采纳答案”.

56x5x125用简便方法计算怎么做?56x5x125=7*8*125*5=7*1000*5=35000

125x(8x40)=125*40*8=1000*8=8000 运用乘法交换律和结合律

125x70=125x(80-10)=125x80-125x10=10000-1250=8750

原式来自=125x120=125x8x15=1000x15=15000 或者百:度=125x40+125x80=125x8x5+125x8x10=1000x5+1000x10=5000+10000=15000

8x25x125x40=8x125x(25x40)=1000x1000=1000000

75x96x125=75x12*8x125=75x2*6*8x125=(75x2)*6*(8x125)=150*6*1000=900*1000=900000

56*40*125 =56*(40*125) =56*5000 =280000

(80)x(45)x(125)=(8x10)x(45)x (1000x 1/8)=10x1000x45=450,000

40*125=40*125*8/8=40*1000/8=5*1000=5000

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