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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 702 · 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. 1.63 + 79 =
  2. 2.22 + 71 =
  3. 3.72 + 25 =
  4. 4.61 + 51 =
  5. 5.74 + 49 =
  6. 6.79 + 82 =
  7. 7.48 + 23 =
  8. 8.68 + 35 =
  9. 9.40 + 37 =
  10. 10.51 + 58 =
  11. 11.68 + 82 =
  12. 12.30 + 75 =
  13. 13.39 + 82 =
  14. 14.28 + 21 =
  15. 15.81 + 87 =
  16. 16.73 + 31 =
  17. 17.67 + 15 =
  18. 18.53 + 37 =
  19. 19.34 + 69 =
  20. 20.85 + 82 =
  21. 21.52 + 24 =
  22. 22.52 + 22 =
  23. 23.28 + 18 =
  24. 24.32 + 44 =
  25. 25.83 + 36 =
  26. 26.89 + 73 =
  27. 27.31 + 29 =
  28. 28.83 + 19 =
  29. 29.68 + 39 =
  30. 30.65 + 48 =
  31. 31.46 + 24 =
  32. 32.75 + 32 =
  33. 33.70 + 82 =
  34. 34.46 + 86 =
  35. 35.70 + 25 =
  36. 36.72 + 21 =
  37. 37.23 + 87 =
  38. 38.23 + 77 =
  39. 39.79 + 85 =
  40. 40.29 + 63 =

Answer key

  1. 142
  2. 93
  3. 97
  4. 112
  5. 123
  6. 161
  7. 71
  8. 103
  9. 77
  10. 109
  11. 150
  12. 105
  13. 121
  14. 49
  15. 168
  16. 104
  17. 82
  18. 90
  19. 103
  20. 167
  21. 76
  22. 74
  23. 46
  24. 76
  25. 119
  26. 162
  27. 60
  28. 102
  29. 107
  30. 113
  31. 70
  32. 107
  33. 152
  34. 132
  35. 95
  36. 93
  37. 110
  38. 100
  39. 164
  40. 92

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