计算(1)(-38)+52+118+(-62)(2)(-323)-(-234)-(-123)-(+1.75)(3)|-79|÷(23-15)-13×(-4)2(4)-22÷43-[22-(1-12×13)]×12.-数学
题文
计算 (1)(-38)+52+118+(-62) (2)(-3
(3)|-
(4)-22÷
|
答案
(1)(-38)+52+118+(-62) =(-38-62)+(52+118) =-100+170 =70; (2)(-3
=(-3
=-1+1 =0; (3)|-
=
=
=-3
(4)-22÷
|