1. 7 + 7 – 7 =
2. 9 – 3 + 12 =
3. 6 x 3 +1 =
4. 12 : 3 x 4 =
5. 2 + 2 – 2 x 2 : 2 =
6. 12 : 12 x 12 =
7. 20 + 5 – 15 : 3 =
8. 75 + 25 – 50 =
9. 12 x 6 – 20 : 5 =
10. 8 + 6 =
11. 15 – 7 =
12. 4 x 3 + 20 ÷ 5 =
13. 6 + 4 x 3 =
14. 7 + 9 : 2 =
15. 4 + 4 – 6 x 2 =
16. 10 + 3 – 4 x 2=