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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 697 · 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. 1.32 + 17 =
  2. 2.22 + 37 =
  3. 3.71 + 41 =
  4. 4.57 + 79 =
  5. 5.47 + 89 =
  6. 6.57 + 32 =
  7. 7.51 + 31 =
  8. 8.26 + 58 =
  9. 9.51 + 68 =
  10. 10.24 + 67 =
  11. 11.74 + 59 =
  12. 12.31 + 21 =
  13. 13.82 + 27 =
  14. 14.59 + 21 =
  15. 15.75 + 43 =
  16. 16.25 + 67 =
  17. 17.76 + 63 =
  18. 18.73 + 31 =
  19. 19.77 + 69 =
  20. 20.42 + 76 =
  21. 21.26 + 23 =
  22. 22.77 + 85 =
  23. 23.64 + 13 =
  24. 24.58 + 21 =
  25. 25.85 + 45 =
  26. 26.34 + 43 =
  27. 27.39 + 16 =
  28. 28.41 + 83 =
  29. 29.35 + 29 =
  30. 30.61 + 41 =
  31. 31.54 + 75 =
  32. 32.59 + 29 =
  33. 33.52 + 52 =
  34. 34.21 + 31 =
  35. 35.33 + 79 =
  36. 36.70 + 29 =
  37. 37.60 + 59 =
  38. 38.58 + 28 =
  39. 39.23 + 49 =
  40. 40.25 + 51 =

Answer key

  1. 49
  2. 59
  3. 112
  4. 136
  5. 136
  6. 89
  7. 82
  8. 84
  9. 119
  10. 91
  11. 133
  12. 52
  13. 109
  14. 80
  15. 118
  16. 92
  17. 139
  18. 104
  19. 146
  20. 118
  21. 49
  22. 162
  23. 77
  24. 79
  25. 130
  26. 77
  27. 55
  28. 124
  29. 64
  30. 102
  31. 129
  32. 88
  33. 104
  34. 52
  35. 112
  36. 99
  37. 119
  38. 86
  39. 72
  40. 76

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