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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 224 · 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. 1.84 + 38 =
  2. 2.40 + 22 =
  3. 3.47 + 16 =
  4. 4.37 + 28 =
  5. 5.28 + 31 =
  6. 6.32 + 17 =
  7. 7.39 + 72 =
  8. 8.52 + 81 =
  9. 9.77 + 61 =
  10. 10.34 + 84 =
  11. 11.28 + 87 =
  12. 12.22 + 36 =
  13. 13.72 + 78 =
  14. 14.33 + 17 =
  15. 15.35 + 14 =
  16. 16.86 + 66 =
  17. 17.63 + 75 =
  18. 18.24 + 41 =
  19. 19.78 + 56 =
  20. 20.88 + 12 =
  21. 21.33 + 55 =
  22. 22.68 + 39 =
  23. 23.72 + 65 =
  24. 24.22 + 46 =
  25. 25.84 + 77 =
  26. 26.39 + 42 =
  27. 27.72 + 29 =
  28. 28.54 + 87 =
  29. 29.39 + 85 =
  30. 30.61 + 51 =
  31. 31.81 + 15 =
  32. 32.35 + 88 =
  33. 33.61 + 14 =
  34. 34.71 + 26 =
  35. 35.29 + 18 =
  36. 36.57 + 54 =
  37. 37.32 + 25 =
  38. 38.62 + 47 =
  39. 39.50 + 48 =
  40. 40.82 + 81 =

Answer key

  1. 122
  2. 62
  3. 63
  4. 65
  5. 59
  6. 49
  7. 111
  8. 133
  9. 138
  10. 118
  11. 115
  12. 58
  13. 150
  14. 50
  15. 49
  16. 152
  17. 138
  18. 65
  19. 134
  20. 100
  21. 88
  22. 107
  23. 137
  24. 68
  25. 161
  26. 81
  27. 101
  28. 141
  29. 124
  30. 112
  31. 96
  32. 123
  33. 75
  34. 97
  35. 47
  36. 111
  37. 57
  38. 109
  39. 98
  40. 163

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