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(2006•渝中区)20.2-3.55-6.45(12−38)÷38110×56÷124511×7+4÷115(455-12.5×4)÷8.1[1-(13+14)]÷511.
题目详情
(2006•渝中区)
20.2-3.55-6.45 (
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20.2-3.55-6.45 (
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▼优质解答
答案和解析
(1)20.2-3.55-6.45,=20.2-(3.55+6.45),=20.2-10,=10.2;(2)(12−38)÷38,=(12−38)×83,=12×83−38×83,=43−1,=13;(3)110×56÷124,=110×56×24,=2;(4)511×7+4÷115,=511×7+4×511,=511...
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