12.56-6.64-3.3645.5-(0.98+5.5)6+7.94+6.43.75×4.8+62.5×0.48.-数学

题目简介

12.56-6.64-3.3645.5-(0.98+5.5)6+7.94+6.43.75×4.8+62.5×0.48.-数学

题目详情

12.56-6.64-3.3645.5-(0.98+5.5)
6+7.94+6.43.75×4.8+62.5×0.48.
题型:解答题难度:中档来源:不详

答案

(1)12.56-6.64-3.36,
=12.56-(6.64+3.36),
=12.56-10,
=2.56;

(2)45.5-(0.98+5.5),
=45.5-6.48,
=39.02;

(3)6+7.94+6.4,
=13.94+6.4,
=20.34;

(4)3.75×4.8+62.5×0.48,
=3.75×4.8+6.25×4.8,
=(3.75+6.25)×4.8,
=10×4.8,
=48.

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