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540➗3+6✖️2用脱式计算,怎...

840÷6×5 =420×2÷6×5 =140×3×2÷6×5 =140×5 =700

(203.4+72.2)÷(13×0.2) =275.6÷13÷0.2 =21.2÷0.2 =

1.08➗(3.94 +34.3✖️

720÷(9×2)简便计算? 解:原式=720÷9÷2→去括号乘以2变成除以2 =80÷2 =40

7.36除以4还要怎么简便?7除以4再加上0.09就好,1.75+0.09=1.84 2.64乘以0

脱括号过程如下: 60➗(10✖️

300÷20+5×2=25 (300÷20+5)×2=40

4500➗48✖️6

(5✖️4)➗(200&#

(42.5x8.9+42.5x11)÷0.5 =42.5x(8.9+11)÷0.5 =42.5x19

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