===?==?=

发布时间:2020-08-09 15:50:32

===?==?=

网友回答

解:(1)1-(+)×2,
=1-(+)×2,
=1-×2,
=1-,
=;

(2)-×(+),
=-×(+),
=-×,
=×(1-),
=×,
=;

(3)÷(÷+),
=÷(×+),
=÷(+),
=÷(+),
=÷,
=×,
=;

(4)(-×)÷,
=(-)÷,
=×6,
=4;

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

(6)(-)÷(×),
=(-)÷,
=×,
=.
解析分析:根据分数的混合运算顺序,按照先算乘除,再算加减,有括号的先算括号里面的顺序计算即可.

点评:本题考查分数的四则混合运算,注意运算顺序,抓住数字特点,能简算的地方要简算.
以上问题属网友观点,不代表本站立场,仅供参考!