A-A+
计算:(1)312-(-13)+(-12)+223(2)-14-16×〔3-(-32)〕×(
问题详情
计算:
(1)3
(2)-14-
(3)(-
(4)-22-[2-(1+
参考答案
(1)原式=312+13-12+223
=312-12+13+223
=3+3
=6;
(2)原式=-1-16×(3-9)×(-2)
=-1-16×(-6)×(-2)
=-1-2
=-3;
(3)原式=(-79-1112+16)×36
=-79×36-1112×36+16×36
=-28-33+6
=-61+6
=-55;
(4)原式=-4-[2-(1+16)]÷[9-4]
=-4-[2-116]÷5
=-4-56×15
=-4-16
=-416.
考点: