问题
解答题
计算: (1)-20+(-14)-(-18)-13; (2)(-
(3)-1-(-5
(4)-14+[1
|
答案
(1)-20+(-14)-(-18)-13
=-20-14+18-13
=-47+18
=-29;
(2)(-
3 |
4 |
5 |
9 |
7 |
12 |
1 |
36 |
=(-
3 |
4 |
5 |
9 |
7 |
12 |
=-
3 |
4 |
5 |
9 |
7 |
12 |
=-27-20+21
=-26;
(3)-1-(-5
1 |
2 |
4 |
11 |
=-1+2+8÷2
=-1+2+4
=5;
(4)-14+[1
1 |
24 |
3 |
8 |
1 |
6 |
3 |
4 |
=-1+[1
1 |
24 |
=-1+6
1 |
24 |
=-1+1
5 |
24 |
=
5 |
24 |