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7.28除以3.2除以2.5脱式计算

(1)7.28-(3.28+0.25)=7.28-3.28-0.25=4-0.25=3.75(2)2518÷(12-13+19 )=2518÷518=5(3)350÷25×4÷8=350×4÷(8×25)=1400÷200=7(4)2.94×37+4.06÷213=(2.94+4.06)×37=7×37=3

8.63+9.5+7.28 =18.13+7.28 =25.41 28.59+6.55-6.89 =35.14-6.89 =28.25 23.47-(6.1+5.79) =23.47-11.89 =11.58 42-13.8+5.94 =28.2+5.94 =34.14

一、脱式计算 2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9 7.28×99+7.28 4.3×50×0.2 60-2.68×0.5 26×15.7+15.7×24 (2.275 +0.625)×0.28 3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8 9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46 8.05×3.4+7.6 6.58×4.5×0.9 2.8×0....

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