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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 194 · 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. 1.31 + 22 =
  2. 2.84 + 81 =
  3. 3.67 + 61 =
  4. 4.69 + 62 =
  5. 5.26 + 55 =
  6. 6.21 + 61 =
  7. 7.87 + 16 =
  8. 8.69 + 81 =
  9. 9.83 + 54 =
  10. 10.87 + 53 =
  11. 11.28 + 18 =
  12. 12.77 + 52 =
  13. 13.28 + 52 =
  14. 14.74 + 33 =
  15. 15.59 + 16 =
  16. 16.41 + 33 =
  17. 17.44 + 74 =
  18. 18.67 + 27 =
  19. 19.24 + 81 =
  20. 20.83 + 67 =
  21. 21.62 + 89 =
  22. 22.40 + 72 =
  23. 23.28 + 42 =
  24. 24.85 + 61 =
  25. 25.89 + 31 =
  26. 26.55 + 72 =
  27. 27.27 + 14 =
  28. 28.59 + 89 =
  29. 29.52 + 69 =
  30. 30.81 + 85 =
  31. 31.72 + 62 =
  32. 32.21 + 38 =
  33. 33.50 + 21 =
  34. 34.82 + 36 =
  35. 35.67 + 41 =
  36. 36.88 + 84 =
  37. 37.27 + 25 =
  38. 38.41 + 21 =
  39. 39.75 + 51 =
  40. 40.58 + 33 =

Answer key

  1. 53
  2. 165
  3. 128
  4. 131
  5. 81
  6. 82
  7. 103
  8. 150
  9. 137
  10. 140
  11. 46
  12. 129
  13. 80
  14. 107
  15. 75
  16. 74
  17. 118
  18. 94
  19. 105
  20. 150
  21. 151
  22. 112
  23. 70
  24. 146
  25. 120
  26. 127
  27. 41
  28. 148
  29. 121
  30. 166
  31. 134
  32. 59
  33. 71
  34. 118
  35. 108
  36. 172
  37. 52
  38. 62
  39. 126
  40. 91

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