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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 211 · 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. 1.28 + 84 =
  2. 2.79 + 88 =
  3. 3.26 + 41 =
  4. 4.72 + 86 =
  5. 5.56 + 19 =
  6. 6.84 + 25 =
  7. 7.29 + 49 =
  8. 8.85 + 18 =
  9. 9.69 + 75 =
  10. 10.69 + 26 =
  11. 11.83 + 27 =
  12. 12.61 + 55 =
  13. 13.71 + 29 =
  14. 14.39 + 73 =
  15. 15.76 + 25 =
  16. 16.29 + 15 =
  17. 17.75 + 88 =
  18. 18.88 + 75 =
  19. 19.85 + 67 =
  20. 20.70 + 16 =
  21. 21.50 + 59 =
  22. 22.81 + 56 =
  23. 23.26 + 31 =
  24. 24.53 + 44 =
  25. 25.50 + 43 =
  26. 26.29 + 55 =
  27. 27.22 + 23 =
  28. 28.45 + 27 =
  29. 29.30 + 51 =
  30. 30.75 + 77 =
  31. 31.87 + 62 =
  32. 32.71 + 44 =
  33. 33.84 + 59 =
  34. 34.35 + 38 =
  35. 35.24 + 22 =
  36. 36.42 + 51 =
  37. 37.68 + 57 =
  38. 38.23 + 35 =
  39. 39.66 + 71 =
  40. 40.40 + 15 =

Answer key

  1. 112
  2. 167
  3. 67
  4. 158
  5. 75
  6. 109
  7. 78
  8. 103
  9. 144
  10. 95
  11. 110
  12. 116
  13. 100
  14. 112
  15. 101
  16. 44
  17. 163
  18. 163
  19. 152
  20. 86
  21. 109
  22. 137
  23. 57
  24. 97
  25. 93
  26. 84
  27. 45
  28. 72
  29. 81
  30. 152
  31. 149
  32. 115
  33. 143
  34. 73
  35. 46
  36. 93
  37. 125
  38. 58
  39. 137
  40. 55

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