÷+×(-+)×24×+1.25×+125%20÷[1-(+)][2-(-1.5)÷]×540÷12×9+482

发布时间:2020-08-06 15:44:14

÷+×(-+)×24×+1.25×+125%20÷[1-(+)][2-(-1.5)÷]×540÷12×9+482

网友回答

解:(1)÷+×,
=+,
=;

(2)(-+)×24,
=×24-×24+×24,
=20-6+10,
=24;

(3)×+1.25×+125%,
=×1.25+1.25×+1.25,
=(++1)×1.25,
=2×1.25,
=2.5;

(4)20÷[1-(+)],
=20÷[1-],
=20÷,
=48;

(5)[2-(-1.5)÷]×,
=[2-(-)×]×,
=[2-×]×,
=[2-]×,
=×,
=12;

(6)540÷12×9+482
=45×9+482,
=405+482,
=887.
解析分析:算式(1)(4)(5)(6)根据四则混合运算的运算顺序计算即可;
算式(2)(3)可根据乘法分配律进行计算.


点评:完成本题要注意分析式中数据的特点及内在联系,然后运用合适的方法进行计算.
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