题目
题型:解答题难度:一般来源:不详
(1)2+(-4)-(-2)+4
(2)2÷(1-
1 |
3 |
2 |
3 |
(3)5-(-2)2×2
(4)(
3 |
4 |
1 |
6 |
1 |
12 |
答案
(2)2÷(1-
1 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
3 |
2 |
2 |
3 |
(3)5-(-2)2×2=5-4×2=5-8=-3;
(4)(
3 |
4 |
1 |
6 |
1 |
12 |
3 |
4 |
1 |
6 |
1 |
12 |
核心考点
举一反三
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
1 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
4 |
3 |
4 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
8×9 |
1 |
9×10 |