计算(1)-16+23+(-17)-(-7)(2)0-12-(-34)+(-56)-23(3)25÷(-225)-821×(-134)-0.5÷2×72(4)[212-(79-1112+16)×36]÷5.-数学
题文
计算 (1)-16+23+(-17)-(-7) (2)0-
(3)
(4)[2
|
答案
(1)-16+23+(-17)-(-7) =-16+23-17+7 =-33+30 =-3; (2)0-
=-
=-1
(3)
=-
|
题文
计算 (1)-16+23+(-17)-(-7) (2)0-
(3)
(4)[2
|
答案
(1)-16+23+(-17)-(-7) =-16+23-17+7 =-33+30 =-3; (2)0-
=-
=-1
(3)
=-
|