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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 322 · 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. 1.51 + 32 =
  2. 2.28 + 88 =
  3. 3.57 + 87 =
  4. 4.40 + 25 =
  5. 5.87 + 62 =
  6. 6.29 + 31 =
  7. 7.76 + 49 =
  8. 8.63 + 18 =
  9. 9.77 + 64 =
  10. 10.81 + 82 =
  11. 11.63 + 31 =
  12. 12.48 + 19 =
  13. 13.25 + 69 =
  14. 14.25 + 71 =
  15. 15.84 + 65 =
  16. 16.25 + 81 =
  17. 17.61 + 55 =
  18. 18.84 + 41 =
  19. 19.30 + 52 =
  20. 20.21 + 55 =
  21. 21.35 + 61 =
  22. 22.63 + 24 =
  23. 23.45 + 81 =
  24. 24.23 + 69 =
  25. 25.42 + 51 =
  26. 26.50 + 89 =
  27. 27.49 + 71 =
  28. 28.60 + 63 =
  29. 29.21 + 16 =
  30. 30.38 + 69 =
  31. 31.37 + 62 =
  32. 32.33 + 44 =
  33. 33.22 + 21 =
  34. 34.85 + 47 =
  35. 35.61 + 49 =
  36. 36.47 + 23 =
  37. 37.72 + 31 =
  38. 38.66 + 17 =
  39. 39.66 + 52 =
  40. 40.21 + 41 =

Answer key

  1. 83
  2. 116
  3. 144
  4. 65
  5. 149
  6. 60
  7. 125
  8. 81
  9. 141
  10. 163
  11. 94
  12. 67
  13. 94
  14. 96
  15. 149
  16. 106
  17. 116
  18. 125
  19. 82
  20. 76
  21. 96
  22. 87
  23. 126
  24. 92
  25. 93
  26. 139
  27. 120
  28. 123
  29. 37
  30. 107
  31. 99
  32. 77
  33. 43
  34. 132
  35. 110
  36. 70
  37. 103
  38. 83
  39. 118
  40. 62

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