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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 773 · 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. 1.84 + 22 =
  2. 2.70 + 58 =
  3. 3.32 + 51 =
  4. 4.32 + 63 =
  5. 5.50 + 34 =
  6. 6.38 + 17 =
  7. 7.85 + 51 =
  8. 8.63 + 85 =
  9. 9.73 + 81 =
  10. 10.46 + 28 =
  11. 11.47 + 79 =
  12. 12.35 + 17 =
  13. 13.35 + 28 =
  14. 14.53 + 71 =
  15. 15.29 + 25 =
  16. 16.84 + 74 =
  17. 17.24 + 71 =
  18. 18.80 + 67 =
  19. 19.83 + 32 =
  20. 20.82 + 22 =
  21. 21.31 + 73 =
  22. 22.76 + 21 =
  23. 23.33 + 71 =
  24. 24.41 + 74 =
  25. 25.43 + 31 =
  26. 26.65 + 71 =
  27. 27.71 + 34 =
  28. 28.21 + 26 =
  29. 29.26 + 15 =
  30. 30.22 + 84 =
  31. 31.39 + 89 =
  32. 32.84 + 58 =
  33. 33.84 + 15 =
  34. 34.75 + 12 =
  35. 35.48 + 61 =
  36. 36.23 + 73 =
  37. 37.42 + 53 =
  38. 38.84 + 76 =
  39. 39.55 + 54 =
  40. 40.82 + 16 =

Answer key

  1. 106
  2. 128
  3. 83
  4. 95
  5. 84
  6. 55
  7. 136
  8. 148
  9. 154
  10. 74
  11. 126
  12. 52
  13. 63
  14. 124
  15. 54
  16. 158
  17. 95
  18. 147
  19. 115
  20. 104
  21. 104
  22. 97
  23. 104
  24. 115
  25. 74
  26. 136
  27. 105
  28. 47
  29. 41
  30. 106
  31. 128
  32. 142
  33. 99
  34. 87
  35. 109
  36. 96
  37. 95
  38. 160
  39. 109
  40. 98

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