Estimate the answer to a calculation and use inverse operations to check answers
| 1. | True or False?: 12 + 14 = 26 | |
| 2. | True or False?: 19 + 13 = 34 | |
| 3. | True or False?: 17 + 19 = 36 | |
| 4. | True or False?: 14 + 17 = 33 | |
| 5. | True or False?: 12 + 13 = 25 | |
| 6. | True or False? 12-6=6 | |
| 7. | True or False: 100 - 47 = 33 | |
| 8. | True or False: 200 - 28 = 172 | |
| 9. | True or False: 30 + 16 - 4 = 44 | |
| 10. | True or False: 30 + 16 - 4 = 42 | |
| 11. | True or False: 30 + 16 - 4 = 46 | |
| 12. | True or False: 12 / 3 = 4 | |
| 13. | True or False: 25 / 5 = 4 | |
| 14. | True or False: 27 / 3 = 9 | |
| 15. | True or False: 30 / 10 = 4 | |
| 16. | True or False: 18 / 2 = 8 | |
| 17. | True or False: 54/6=6÷54 | |
| 18. | True or False: 12/6=6/12 | |
| 19. | True or False: 24/4=400 | |
| 20. | True or False: 30/6=5 | |
| 21. | True or False: 24/2=10 | |
| 22. | True or False: 18/3=6 | |
| 23. | True or False: 25/5=6 | |
| 24. | True or False: 20/5=4 |