A-A+

计算:(1)312-(-13)+(-12)+223(2)-14-16×〔3-(-32)〕×(

2022-08-15 16:07:18 问答库 阅读 207 次

问题详情

计算:
(1)31

2

-(-1

3

)+(-1

2

)+22

3


(2)-14-1

6

×〔3-(-32)〕×(-2)
(3)(-7

9

-11

12

+1

6

)×(-6)2
(4)-22-[2-(1+1

3

×0.5)]÷[32-(-2)2].

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: