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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 276 · 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. 1.62 + 47 =
  2. 2.31 + 46 =
  3. 3.76 + 28 =
  4. 4.29 + 53 =
  5. 5.32 + 53 =
  6. 6.32 + 36 =
  7. 7.82 + 22 =
  8. 8.41 + 82 =
  9. 9.78 + 16 =
  10. 10.48 + 36 =
  11. 11.74 + 58 =
  12. 12.23 + 78 =
  13. 13.30 + 71 =
  14. 14.35 + 17 =
  15. 15.40 + 14 =
  16. 16.46 + 61 =
  17. 17.25 + 61 =
  18. 18.33 + 74 =
  19. 19.49 + 46 =
  20. 20.22 + 44 =
  21. 21.32 + 34 =
  22. 22.88 + 22 =
  23. 23.28 + 66 =
  24. 24.65 + 39 =
  25. 25.47 + 52 =
  26. 26.78 + 14 =
  27. 27.24 + 53 =
  28. 28.36 + 76 =
  29. 29.89 + 29 =
  30. 30.25 + 52 =
  31. 31.22 + 27 =
  32. 32.70 + 24 =
  33. 33.47 + 39 =
  34. 34.84 + 89 =
  35. 35.47 + 53 =
  36. 36.77 + 67 =
  37. 37.24 + 71 =
  38. 38.31 + 85 =
  39. 39.37 + 79 =
  40. 40.53 + 46 =

Answer key

  1. 109
  2. 77
  3. 104
  4. 82
  5. 85
  6. 68
  7. 104
  8. 123
  9. 94
  10. 84
  11. 132
  12. 101
  13. 101
  14. 52
  15. 54
  16. 107
  17. 86
  18. 107
  19. 95
  20. 66
  21. 66
  22. 110
  23. 94
  24. 104
  25. 99
  26. 92
  27. 77
  28. 112
  29. 118
  30. 77
  31. 49
  32. 94
  33. 86
  34. 173
  35. 100
  36. 144
  37. 95
  38. 116
  39. 116
  40. 99

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