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125X4/25X8的简便计算方法是?

125X4/25X8 =(100÷25+25÷25)X4X8 =(4+1)X2X16 =160

原式 =(25x4)x(125x8) =100x1000 =100000

224x25x125x4x8 =224x(25x4)x(125x8) =224x100x1000

38x8x25x125x4x2 =(38x2)x(8x125)x(25x4) =76x1000x10

=4(50+125)

25X32X125=(25X4)X(125X8)=100x1000=100000 是用了【乘法的结

125x4+25x8 =25X4(5十2) =100*7 =700

不是正确的。125÷25≠(125x8)÷(25x4),改变了运算顺序

25x4=100; 125x8=1000; 25x16 =25x4x4 =100x4

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