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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 760 · 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. 1.55 + 26 =
  2. 2.44 + 45 =
  3. 3.44 + 29 =
  4. 4.53 + 45 =
  5. 5.39 + 12 =
  6. 6.37 + 89 =
  7. 7.37 + 59 =
  8. 8.68 + 18 =
  9. 9.29 + 27 =
  10. 10.64 + 23 =
  11. 11.33 + 68 =
  12. 12.66 + 21 =
  13. 13.35 + 24 =
  14. 14.41 + 18 =
  15. 15.49 + 25 =
  16. 16.86 + 67 =
  17. 17.38 + 31 =
  18. 18.72 + 61 =
  19. 19.36 + 85 =
  20. 20.40 + 21 =
  21. 21.39 + 21 =
  22. 22.65 + 79 =
  23. 23.65 + 13 =
  24. 24.24 + 53 =
  25. 25.46 + 61 =
  26. 26.42 + 36 =
  27. 27.35 + 65 =
  28. 28.87 + 61 =
  29. 29.71 + 73 =
  30. 30.36 + 76 =
  31. 31.76 + 41 =
  32. 32.89 + 74 =
  33. 33.25 + 27 =
  34. 34.43 + 42 =
  35. 35.43 + 71 =
  36. 36.55 + 63 =
  37. 37.31 + 22 =
  38. 38.21 + 29 =
  39. 39.58 + 22 =
  40. 40.28 + 18 =

Answer key

  1. 81
  2. 89
  3. 73
  4. 98
  5. 51
  6. 126
  7. 96
  8. 86
  9. 56
  10. 87
  11. 101
  12. 87
  13. 59
  14. 59
  15. 74
  16. 153
  17. 69
  18. 133
  19. 121
  20. 61
  21. 60
  22. 144
  23. 78
  24. 77
  25. 107
  26. 78
  27. 100
  28. 148
  29. 144
  30. 112
  31. 117
  32. 163
  33. 52
  34. 85
  35. 114
  36. 118
  37. 53
  38. 50
  39. 80
  40. 46

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