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巧算512Ⅹ25x125

这一题要靠对有些特殊数字,特殊计算的敏感度来作答,不管是什么题目,简便运算都是用凑整十整百整千等等,就是要把数字的计算变成是一位数非0数的计算,就可以很快答出。 512÷4=128,128÷8=16, 所以512x25x125 =16x4x8x25x125 =16x(4x25...

25×16×125 =25×(2×8)×125 =(25×2)×(8×125) =50×1000 =50000

25x16x125 =25×(4×4)×(25×5) =25×4×4×25×5 =(25×4)×(4×25)×5 =100×100×5 =50000

25x48x125 =25x6x8x125 =(25x6)x(8x125) =150x1000 =150000

25 x 125 x 16 = 25 x 125 x 2 x 8 = (25 x 2) x ( 125 x 8) = 50 x 1000 = 50000

25×4×125×8=100×1000=

25X16X125 =25X4X4X125 =100X500 =500000 或25X16X125 =25X2X8X125 =50X1000 =500000 常见化简算式,应牢记: 125X8=1000 25X4=100

25×24×16×125 =25×(4×6)×(2×8)×125 =(25×4)×(8×125)×(6×2) =100×1000×12 =一百二十万

原数等于 25×4×125×8×2 =100×1000×2 =200000 ~回答完毕~ ~结果仅供参考~ ~\(^o^)/~祝学习进步~~~

25X16X125 =25X4X4X125 =100X500 =500000 或25X16X125 =25X2X8X125 =50X1000 =500000 常见化简算式: 125X8=1000 25X4=100

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