1 |
2 |
1 |
4 |
5 |
4 |
1 |
4 |
3 |
4 |
A.100-1+99=100-(1+99) | ||||||||
B.1-999=999-1 | ||||||||
C.6÷(
| ||||||||
D.-2007a×2008=-2008a×2007 |
4 |
7 |
1 |
5 |
3 |
7 |
9 |
5 |
1 |
5 |
1 |
2 |
3 |
4 |
1 |
3 |
5 |
3 |
1 |
5 |
1 |
5 |
5 |
6 |
2 |
3 |
3 |
4 |
1 |
12 |
1 |
3 |
1 |
2 |
1 |
4 |
3 |
2 |
1 |
2 |
3 |
4 |
5 |
12 |
19 |
36 |
1 |
4 |
7 |
9 |
5 |
6 |
3 |
4 |
2 |
3 |
1 |
6 |
1 |
2 |
1 |
12 |
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