1. 13 12 13
5 3 6
8 9 7
2. = >
> <
< >
3. 6+5=11
11-5=6
11-6=5
7+5=12
12-5=7
12-7=5
4. 11 8 10 7
9 11 8 6
5. 6 8 7
7 9 9
8 7 6
9 9 8
9 5 8
6. 13-4=9
7. ○=4 ☆=8