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25x16的简便运算

25x16 =25x4x4 =100x4 =400

25X16=25X4x4 =100X4 =400

如图

把16分开,4×4

把25拆成五成五把十六拆成4乘4从而计算。

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

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

180÷15+25×16 =12+25x16 =12+25x4x4 =12+100x4 =12+400 =412

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

180÷15+25x16 =180÷3÷5+25x4x4 =60÷5+100x4 =12+400 =412

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