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(1)19.28+1.82÷0.7(2)10.56×3.75﹣3.75×0.56(3)(71.2﹣71.2×0.9)÷0.25(4)14.53﹣(2.64+0.53)-1.36(5)13.5÷[(2﹣0.8)×4.5](6)[(6.1﹣4.6)÷0.8﹣1]÷0.4
题目详情
(1)19.28+1.82÷0.7 | (2)10.56×3.75﹣3.75 ×0.56 | (3)(71.2﹣71.2×0.9)÷0.25 |
(4)14.53﹣(2.64+0.53)-1.36 | (5)13.5÷[(2﹣0.8)×4.5] | (6)[(6.1﹣4.6)÷0.8﹣1] ÷0.4 |
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答案和解析
(1) 19.28+1.82÷0.7 =19.28+2.6 =21.88 | (2) 10.56×3.75﹣3.75×0.56 =(10.56﹣0.56)×3.75 =10×3.75 =37.5 | (3)(71.2﹣71.2×0.9)÷0.25 =(1﹣0.9)×71.2÷ =7.12×4 =28.48 |
(4)14.53﹣(2.64+0.53)﹣1.36 =(14.53﹣0.53)﹣(2.64+1.36) =14﹣4 =10 | (5)13.5÷[(2﹣0.8)×4.5] | (6)[(6.1﹣4.6)÷0.8﹣1]÷0.4 =[1.5÷0.8﹣1]÷0.4 =[1.875﹣1]÷0.4 =0.875÷0.4 =2.1875. |
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