1. Add multiples of 10

2. Subtract multiples 10

3. Make 100

4. + 1 digit to 2 digit

5. - 1 digit from 2 digit

6. + (x10) to 2 digit

7. - (x10) from 2 digit

8. + & - (x10) from 2 digit

9. + (2x) 2 digits

10. - (2x) 2 digits

11. + & - (2x) 2 digits

12. + (2x) 2 digits

13. - (2x) 2 digits

14. + & - (2x) 2 digits

15. Simple Equations

16. Complex Equations