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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 2 · 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. 1.69 + 44 =
  2. 2.65 + 84 =
  3. 3.51 + 45 =
  4. 4.83 + 45 =
  5. 5.30 + 79 =
  6. 6.65 + 31 =
  7. 7.49 + 14 =
  8. 8.50 + 13 =
  9. 9.64 + 47 =
  10. 10.38 + 61 =
  11. 11.30 + 34 =
  12. 12.33 + 69 =
  13. 13.65 + 42 =
  14. 14.21 + 63 =
  15. 15.76 + 29 =
  16. 16.23 + 65 =
  17. 17.88 + 12 =
  18. 18.41 + 81 =
  19. 19.36 + 16 =
  20. 20.64 + 31 =
  21. 21.88 + 49 =
  22. 22.69 + 72 =
  23. 23.29 + 66 =
  24. 24.61 + 31 =
  25. 25.30 + 78 =
  26. 26.29 + 51 =
  27. 27.54 + 17 =
  28. 28.88 + 72 =
  29. 29.43 + 33 =
  30. 30.66 + 64 =
  31. 31.83 + 48 =
  32. 32.67 + 12 =
  33. 33.35 + 44 =
  34. 34.71 + 64 =
  35. 35.31 + 77 =
  36. 36.57 + 23 =
  37. 37.53 + 66 =
  38. 38.38 + 49 =
  39. 39.60 + 57 =
  40. 40.28 + 77 =

Answer key

  1. 113
  2. 149
  3. 96
  4. 128
  5. 109
  6. 96
  7. 63
  8. 63
  9. 111
  10. 99
  11. 64
  12. 102
  13. 107
  14. 84
  15. 105
  16. 88
  17. 100
  18. 122
  19. 52
  20. 95
  21. 137
  22. 141
  23. 95
  24. 92
  25. 108
  26. 80
  27. 71
  28. 160
  29. 76
  30. 130
  31. 131
  32. 79
  33. 79
  34. 135
  35. 108
  36. 80
  37. 119
  38. 87
  39. 117
  40. 105

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