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脱式计算,能简算的要简算.17.4÷0.8÷1.251.8÷0.2÷0.324÷O.6+0.6÷2417.94÷3.9+5.3×0.4.

题目详情

脱式计算,能简算的要简算.
17.4÷0.8÷1.25
1.8÷0.2÷0.3
24÷O.6+0.6÷24
17.94÷3.9+5.3×0.4.
▼优质解答
答案和解析
(1)17.4÷0.8÷1.25,
=17.4÷(0.8×1.25),
=17.4÷1,
=17.4;

(2)1.8÷0.2÷0.3,
=1.8÷(0.2×0.3),
=1.8÷0.06,
=30;

(3)24÷O.6+0.6÷24,
=40+0.025,
=40.025;

(4)17.94÷3.9+5.3×0.4,
=4.6+0.12,
=4.72.