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25x16的简便运算

25x16 =25x4x4 =100x4 =400

如图

25X16=25X4x4 =100X4 =400

25x(480+25x16) =25x(480+25x4x4) =25x(480+400) =25x880 =25x4x220 =100x220 =22000

列式为: 75x16x25x16 =25x3x4x4x25x16 =25x4x25x4x3x16 =100x100x48 =480000

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

25x16-16x15 =16x(25-15) =160

25×16×125 =(25x4)x(4x125) =100x500 =50000

16×109×25 =4x4x109x25 =4x109x(4x25) =436x100 =43600 谢谢,请采纳

16拆成4*4

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