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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 564 · 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. 1.32 + 81 =
  2. 2.86 + 44 =
  3. 3.34 + 45 =
  4. 4.22 + 12 =
  5. 5.71 + 16 =
  6. 6.88 + 29 =
  7. 7.60 + 79 =
  8. 8.86 + 61 =
  9. 9.79 + 87 =
  10. 10.64 + 29 =
  11. 11.79 + 13 =
  12. 12.54 + 44 =
  13. 13.42 + 23 =
  14. 14.26 + 65 =
  15. 15.68 + 51 =
  16. 16.34 + 71 =
  17. 17.29 + 56 =
  18. 18.48 + 26 =
  19. 19.53 + 81 =
  20. 20.77 + 48 =
  21. 21.82 + 15 =
  22. 22.70 + 26 =
  23. 23.73 + 13 =
  24. 24.23 + 41 =
  25. 25.43 + 19 =
  26. 26.73 + 29 =
  27. 27.53 + 34 =
  28. 28.34 + 52 =
  29. 29.61 + 72 =
  30. 30.22 + 24 =
  31. 31.43 + 26 =
  32. 32.38 + 81 =
  33. 33.55 + 66 =
  34. 34.24 + 62 =
  35. 35.85 + 48 =
  36. 36.30 + 31 =
  37. 37.24 + 18 =
  38. 38.44 + 66 =
  39. 39.85 + 81 =
  40. 40.62 + 66 =

Answer key

  1. 113
  2. 130
  3. 79
  4. 34
  5. 87
  6. 117
  7. 139
  8. 147
  9. 166
  10. 93
  11. 92
  12. 98
  13. 65
  14. 91
  15. 119
  16. 105
  17. 85
  18. 74
  19. 134
  20. 125
  21. 97
  22. 96
  23. 86
  24. 64
  25. 62
  26. 102
  27. 87
  28. 86
  29. 133
  30. 46
  31. 69
  32. 119
  33. 121
  34. 86
  35. 133
  36. 61
  37. 42
  38. 110
  39. 166
  40. 128

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