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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 535 · 40 questions
TalentJR

How to do it in your head (Tens first): Keep the first number as it is. Add the tens of the second number. Add the ones.

NameDateTime takenScore ___ / 40
  1. 1.21 + 85 =
  2. 2.70 + 22 =
  3. 3.52 + 67 =
  4. 4.56 + 51 =
  5. 5.64 + 34 =
  6. 6.70 + 62 =
  7. 7.45 + 59 =
  8. 8.45 + 71 =
  9. 9.22 + 87 =
  10. 10.58 + 55 =
  11. 11.69 + 32 =
  12. 12.57 + 16 =
  13. 13.34 + 34 =
  14. 14.21 + 82 =
  15. 15.65 + 17 =
  16. 16.48 + 84 =
  17. 17.42 + 12 =
  18. 18.36 + 17 =
  19. 19.27 + 51 =
  20. 20.79 + 13 =
  21. 21.74 + 51 =
  22. 22.87 + 81 =
  23. 23.40 + 55 =
  24. 24.32 + 21 =
  25. 25.75 + 46 =
  26. 26.53 + 44 =
  27. 27.54 + 23 =
  28. 28.61 + 32 =
  29. 29.33 + 34 =
  30. 30.54 + 71 =
  31. 31.44 + 68 =
  32. 32.70 + 81 =
  33. 33.41 + 68 =
  34. 34.61 + 14 =
  35. 35.22 + 61 =
  36. 36.83 + 48 =
  37. 37.81 + 16 =
  38. 38.23 + 29 =
  39. 39.42 + 56 =
  40. 40.33 + 54 =

Answer key

  1. 106
  2. 92
  3. 119
  4. 107
  5. 98
  6. 132
  7. 104
  8. 116
  9. 109
  10. 113
  11. 101
  12. 73
  13. 68
  14. 103
  15. 82
  16. 132
  17. 54
  18. 53
  19. 78
  20. 92
  21. 125
  22. 168
  23. 95
  24. 53
  25. 121
  26. 97
  27. 77
  28. 93
  29. 67
  30. 125
  31. 112
  32. 151
  33. 109
  34. 75
  35. 83
  36. 131
  37. 97
  38. 52
  39. 98
  40. 87

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