A-A+

计算(1)22-(-4)+(-2)+4;(2)-1-2×(-3);(3)(-81)÷94×4

2022-08-15 16:21:46 问答库 阅读 207 次

问题详情

计算
(1)22-(-4)+(-2)+4;
(2)-1-2×(-3);
(3)(-81)÷9

4

×4

9

÷(-1

36

);
(4)(7

9

-5

6

+3

4

)×(-36);
(5)0-32÷[(-2)3-(-4)];
(6)(-3)2-[(-2

3

)+(-1

4

)]÷1

12


(7)-14÷(-5)2×(-5

3

)+|0.8-1|;
(8)-3×(-2

3

)2-4×(1-2

3

)-8÷(2

3

)2

参考答案

(1)22-(-4)+(-2)+4
=22+4-2+4
=30-2
=28;

(2)-1-2×(-3)
=-1+6
=5;

(3)(-81)÷94×49÷(-136)
=81×49×49×36
=576;

(4)(79-56+34)×(-36)
=-79×36+56×36-34×36
=-28+30-27
=-55+30
=-25;

(5)0-32÷[(-2)3-(-4)]
=0-9÷[(-8)-(-4)]
=0-9÷(-4)
=0+2.25
=2.25;

(6)(-3)2-[(-23)+(-14)]÷112
=9-[(-23)+(-14)]×12
=9+8+3
=20;

(7)-14÷(-5)2×(-53)+|0.8-1|
=-1÷25×(-53)+15
=115+15
=415;

(8)-3×(-23)2-4×(1-23)-8÷(23)2
=-3×49-4×13-8÷49
=-113-113-18
=-2023.

考点: