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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 701 · 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 + 48 =
  2. 2.82 + 13 =
  3. 3.24 + 71 =
  4. 4.29 + 41 =
  5. 5.31 + 65 =
  6. 6.49 + 27 =
  7. 7.46 + 33 =
  8. 8.58 + 31 =
  9. 9.22 + 53 =
  10. 10.69 + 33 =
  11. 11.25 + 55 =
  12. 12.51 + 51 =
  13. 13.76 + 52 =
  14. 14.34 + 45 =
  15. 15.73 + 55 =
  16. 16.21 + 59 =
  17. 17.37 + 52 =
  18. 18.31 + 56 =
  19. 19.73 + 12 =
  20. 20.84 + 71 =
  21. 21.69 + 84 =
  22. 22.30 + 49 =
  23. 23.62 + 58 =
  24. 24.81 + 22 =
  25. 25.86 + 21 =
  26. 26.73 + 25 =
  27. 27.84 + 66 =
  28. 28.42 + 32 =
  29. 29.39 + 89 =
  30. 30.29 + 28 =
  31. 31.33 + 62 =
  32. 32.37 + 41 =
  33. 33.45 + 31 =
  34. 34.58 + 13 =
  35. 35.22 + 18 =
  36. 36.65 + 25 =
  37. 37.53 + 17 =
  38. 38.21 + 33 =
  39. 39.25 + 34 =
  40. 40.60 + 21 =

Answer key

  1. 80
  2. 95
  3. 95
  4. 70
  5. 96
  6. 76
  7. 79
  8. 89
  9. 75
  10. 102
  11. 80
  12. 102
  13. 128
  14. 79
  15. 128
  16. 80
  17. 89
  18. 87
  19. 85
  20. 155
  21. 153
  22. 79
  23. 120
  24. 103
  25. 107
  26. 98
  27. 150
  28. 74
  29. 128
  30. 57
  31. 95
  32. 78
  33. 76
  34. 71
  35. 40
  36. 90
  37. 70
  38. 54
  39. 59
  40. 81

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