题目
题型:解答题难度:一般来源:不详
4 |
7 |
1 |
3 |
答案
4 |
7 |
1 |
3 |
=-27+
3 |
7 |
1 |
3 |
=-27+2
=-(27-2)
=-25.
核心考点
举一反三
(1)5-(-6)-(+3)
(2)(-81)÷2
1 |
4 |
4 |
9 |
(3)(
7 |
9 |
5 |
6 |
3 |
4 |
1 |
36 |
(4)-42÷(-2)-(-
1 |
8 |
1 |
4 |
(5)1-2+3-4+5-6+…+2019-2020.
11 |
14 |
4 |
17 |
2 |
15 |
4 |
17 |
13 |
15 |
13 |
15 |
3 |
4 |
7 |
3 |
7 |
12 |
1 |
7 |