A two-digit number and tens
| 1. | 10 less, 10 more than 40 | |
| 2. | Which number is 10 more than 18? | |
| 3. | Which number is 10 more than 20? | |
| 4. | Which number is 10 more than 18? | |
| 5. | Which number is 10 more than 11? | |
| 6. | Which number is 10 less than 16? | |
| 7. | Which number is 10 less than 22? | |
| 8. | Which number is 10 more than 89? | |
| 9. | Which number is 10 more than 27? | |
| 10. | Which number is 10 more than 62? | |
| 11. | Which number is 10 less than 45? | |
| 12. | Which number is 10 less than 23? | |
| 13. | Which number is 10 less than 76? | |
| 14. | 10 less, 10 more than 10 | |
| 15. | 10 less, 10 more than 20 | |
| 16. | 10 less, 10 more than 30 | |
| 17. | 10 less, 10 more than 40 | |
| 18. | 10 less, 10 more than 50 | |
| 19. | 10 less, 10 more than 60 | |
| 20. | 10 less, 10 more than 38 | |
| 21. | 10 less, 10 more than 24 | |
| 22. | Which number is 10 more than 10? | |
| 23. | 100 Grid: Start at 27. Add 3 tens | |
| 24. | 100 Grid: Start at 7. Add 4 tens | |
| 25. | 100 Grid: Start at 25. Add 3 tens | |
| 26. | 100 Grid: Start at 54. Add 2 tens | |
| 27. | 100 Grid: Start at 22. Add 5 tens | |
| 28. | Number Detectives: 10 + 27 = ? | |
| 29. | 100 Grid: Start at 73. Add 10 | |
| 30. | 100 Grid: Start at 35. Add 10 | |
| 31. | 100 Grid: Start at 56. Add 10 | |
| 32. | 100 Grid: Start at 83. Add 10 | |
| 33. | 100 Grid: Start at 34. Add 10 | |
| 34. | Adding tens: 42 + 10 = ? | |
| 35. | Adding tens: 38 + 20 = ? | |
| 36. | Adding tens: 56 + 30 = ? | |
| 37. | Add on tens: Add 10, 20 to 35 | |
| 38. | Add on tens: Add 10, 20 to 16. | |
| 39. | Add on tens: Add 10, 20 to 36 | |
| 40. | Which number is 10 less than 30? | |
| 41. | Which number is 10 less than 20? | |
| 42. | Which number is 10 less than 10? | |
| 43. | Which number is 10 less than 50? | |
| 44. | Which number is 10 less than 40? | |
| 45. | Number detectives 18 -10 = ? | |
| 46. | Which number is 10 less than 80? | |
| 47. | Which number is 10 less than 60? | |
| 48. | Which number is 10 less than 90? | |
| 49. | Which number is 10 less than 100? | |
| 50. | Which number is 10 less than 70? | |
| 51. | Take 10: 40 - 10 = ? | |
| 52. | Taking ten: 46-10 | |
| 53. | Taking ten: 72-10 | |
| 54. | Taking ten: 39-10 | |
| 55. | Taking ten: 55-10 | |
| 56. | Taking ten: 81-10 | |
| 57. | Taking Tens: 44 - 20 | |
| 58. | Taking Tens: 68 - 30 | |
| 59. | Taking Tens: 98 - 50 | |
| 60. | Taking Tens: 32 - 20 | |
| 61. | Taking Tens: 59 - 40 | |
| 62. | Taking Tens: 87 - 20 | |
| 63. | Taking Tens: 72 - 40 | |
| 64. | Take Ten 42 - 10 | |
| 65. | Subtracting tens 55 - 20 = ? | |
| 66. | Subtracting tens 48 - 20 = ? | |
| 67. | Subtracting tens 72 - 30 = ? | |
| 68. | Subtracting tens 87 - 60 = ? | |
| 69. | Subtracting tens 91 - 60 = ? | |
| 70. | What Comes Next? - 10 less than 12 | |
| 71. | What Comes Next? - 10 more than 13 | |
| 72. | What Comes Next? - 10 more than 12 |