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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 102 · 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. 1.58 + 88 =
  2. 2.53 + 12 =
  3. 3.85 + 53 =
  4. 4.57 + 29 =
  5. 5.34 + 19 =
  6. 6.55 + 77 =
  7. 7.53 + 17 =
  8. 8.78 + 22 =
  9. 9.37 + 23 =
  10. 10.46 + 53 =
  11. 11.69 + 61 =
  12. 12.65 + 78 =
  13. 13.76 + 28 =
  14. 14.22 + 81 =
  15. 15.32 + 31 =
  16. 16.60 + 28 =
  17. 17.27 + 56 =
  18. 18.71 + 32 =
  19. 19.72 + 22 =
  20. 20.47 + 57 =
  21. 21.49 + 57 =
  22. 22.82 + 86 =
  23. 23.32 + 13 =
  24. 24.73 + 12 =
  25. 25.72 + 49 =
  26. 26.39 + 25 =
  27. 27.76 + 41 =
  28. 28.36 + 84 =
  29. 29.70 + 16 =
  30. 30.72 + 17 =
  31. 31.22 + 21 =
  32. 32.37 + 26 =
  33. 33.23 + 16 =
  34. 34.30 + 26 =
  35. 35.40 + 84 =
  36. 36.80 + 69 =
  37. 37.53 + 68 =
  38. 38.47 + 22 =
  39. 39.33 + 24 =
  40. 40.53 + 54 =

Answer key

  1. 146
  2. 65
  3. 138
  4. 86
  5. 53
  6. 132
  7. 70
  8. 100
  9. 60
  10. 99
  11. 130
  12. 143
  13. 104
  14. 103
  15. 63
  16. 88
  17. 83
  18. 103
  19. 94
  20. 104
  21. 106
  22. 168
  23. 45
  24. 85
  25. 121
  26. 64
  27. 117
  28. 120
  29. 86
  30. 89
  31. 43
  32. 63
  33. 39
  34. 56
  35. 124
  36. 149
  37. 121
  38. 69
  39. 57
  40. 107

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