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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 203 · 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. 1.34 + 62 =
  2. 2.86 + 47 =
  3. 3.34 + 51 =
  4. 4.23 + 14 =
  5. 5.37 + 15 =
  6. 6.80 + 29 =
  7. 7.78 + 19 =
  8. 8.55 + 14 =
  9. 9.47 + 64 =
  10. 10.57 + 31 =
  11. 11.45 + 81 =
  12. 12.47 + 13 =
  13. 13.75 + 28 =
  14. 14.46 + 14 =
  15. 15.49 + 82 =
  16. 16.81 + 78 =
  17. 17.54 + 65 =
  18. 18.23 + 61 =
  19. 19.58 + 42 =
  20. 20.77 + 89 =
  21. 21.31 + 82 =
  22. 22.60 + 28 =
  23. 23.65 + 32 =
  24. 24.25 + 82 =
  25. 25.43 + 28 =
  26. 26.29 + 34 =
  27. 27.26 + 63 =
  28. 28.26 + 44 =
  29. 29.24 + 71 =
  30. 30.78 + 63 =
  31. 31.40 + 48 =
  32. 32.60 + 66 =
  33. 33.74 + 73 =
  34. 34.51 + 22 =
  35. 35.25 + 29 =
  36. 36.74 + 75 =
  37. 37.79 + 52 =
  38. 38.59 + 66 =
  39. 39.33 + 57 =
  40. 40.39 + 39 =

Answer key

  1. 96
  2. 133
  3. 85
  4. 37
  5. 52
  6. 109
  7. 97
  8. 69
  9. 111
  10. 88
  11. 126
  12. 60
  13. 103
  14. 60
  15. 131
  16. 159
  17. 119
  18. 84
  19. 100
  20. 166
  21. 113
  22. 88
  23. 97
  24. 107
  25. 71
  26. 63
  27. 89
  28. 70
  29. 95
  30. 141
  31. 88
  32. 126
  33. 147
  34. 73
  35. 54
  36. 149
  37. 131
  38. 125
  39. 90
  40. 78

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