题目内容
脱式计算:
6760÷13+17×25
4.82-5.2÷0.8×0.6.
6760÷13+17×25
4.82-5.2÷0.8×0.6.
分析:(1)同时运算除法和乘法,最后算加法;
(2)先算除法,再算乘法,最后算减法.
(2)先算除法,再算乘法,最后算减法.
解答:解:(1)6760÷13+17×25,
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92.
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92.
点评:1、如果是同一级运算,一般按从左往右依次进行计算;2、如果既有加减、又有乘除法,先算乘除法、再算加减.
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