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720÷18的简便计算

720÷18 =720÷9÷8 =80÷2 =40 可以用除法性质(除以两个数相等于除以这两

720÷18 =720÷(9x2) =720÷9÷2 =80÷2 =40

720÷18 =720÷9÷2 =80÷2 =40

25×720÷(18÷4) =25x720÷18x4 =(25x4)x(720÷18) =10

720÷180=720÷(6×30)=720÷6÷30=120÷30=4

720÷18 =720÷9÷2 =80÷2 =40

720÷18÷4 =720÷(18×4) =720÷72 =10

720÷18简便做法 解:根据拆分法的运用, 原式=720÷(9x2) =720÷9÷2 =80÷2

18X(720十36÷2) =18X(720+18) =18X738 =20X738-2X73

解:直接运算最简便, 原式=1200-20×720-720÷15 =1200-14400-48 =-

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