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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 252 · 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. 1.52 + 54 =
  2. 2.31 + 64 =
  3. 3.36 + 36 =
  4. 4.38 + 81 =
  5. 5.56 + 72 =
  6. 6.38 + 47 =
  7. 7.73 + 12 =
  8. 8.79 + 32 =
  9. 9.67 + 32 =
  10. 10.69 + 84 =
  11. 11.43 + 41 =
  12. 12.54 + 52 =
  13. 13.72 + 81 =
  14. 14.50 + 21 =
  15. 15.29 + 12 =
  16. 16.41 + 89 =
  17. 17.26 + 61 =
  18. 18.64 + 24 =
  19. 19.52 + 33 =
  20. 20.63 + 31 =
  21. 21.65 + 26 =
  22. 22.34 + 37 =
  23. 23.23 + 81 =
  24. 24.54 + 66 =
  25. 25.47 + 32 =
  26. 26.57 + 62 =
  27. 27.68 + 32 =
  28. 28.52 + 71 =
  29. 29.60 + 13 =
  30. 30.39 + 48 =
  31. 31.34 + 72 =
  32. 32.80 + 27 =
  33. 33.64 + 81 =
  34. 34.28 + 51 =
  35. 35.47 + 22 =
  36. 36.55 + 32 =
  37. 37.24 + 36 =
  38. 38.87 + 83 =
  39. 39.22 + 35 =
  40. 40.83 + 16 =

Answer key

  1. 106
  2. 95
  3. 72
  4. 119
  5. 128
  6. 85
  7. 85
  8. 111
  9. 99
  10. 153
  11. 84
  12. 106
  13. 153
  14. 71
  15. 41
  16. 130
  17. 87
  18. 88
  19. 85
  20. 94
  21. 91
  22. 71
  23. 104
  24. 120
  25. 79
  26. 119
  27. 100
  28. 123
  29. 73
  30. 87
  31. 106
  32. 107
  33. 145
  34. 79
  35. 69
  36. 87
  37. 60
  38. 170
  39. 57
  40. 99

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