A-A+
计算(1)-16+23+(-17)-(-7)(2)0-12-(-34)+(-56)-23(3
问题详情
计算
(1)-16+23+(-17)-(-7)
(2)0-
(3)
(4)[2
参考答案
(1)-16+23+(-17)-(-7)
=-16+23-17+7
=-33+30
=-3;
(2)0-12-(-34)+(-56)-23
=-612+912-1012-812
=-114;
(3)25÷(-225)-821×(-134)-0.5÷2×72
=-16+23-12×12×72
=-16+23-78
=-38;
(4)[212-(79-1112+16)×36]÷5
=[212-(28-33+6)]÷5
=[212-1]÷5
=32÷5
=310.
考点: