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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 400 · 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. 1.41 + 26 =
  2. 2.31 + 26 =
  3. 3.85 + 72 =
  4. 4.34 + 29 =
  5. 5.69 + 25 =
  6. 6.62 + 21 =
  7. 7.70 + 67 =
  8. 8.87 + 61 =
  9. 9.80 + 71 =
  10. 10.30 + 68 =
  11. 11.84 + 18 =
  12. 12.82 + 21 =
  13. 13.75 + 29 =
  14. 14.61 + 23 =
  15. 15.36 + 49 =
  16. 16.41 + 14 =
  17. 17.38 + 75 =
  18. 18.65 + 65 =
  19. 19.23 + 17 =
  20. 20.22 + 42 =
  21. 21.31 + 61 =
  22. 22.49 + 63 =
  23. 23.50 + 41 =
  24. 24.82 + 42 =
  25. 25.52 + 46 =
  26. 26.46 + 29 =
  27. 27.41 + 31 =
  28. 28.33 + 77 =
  29. 29.29 + 41 =
  30. 30.79 + 23 =
  31. 31.49 + 18 =
  32. 32.40 + 16 =
  33. 33.40 + 47 =
  34. 34.32 + 57 =
  35. 35.24 + 21 =
  36. 36.33 + 63 =
  37. 37.50 + 32 =
  38. 38.88 + 75 =
  39. 39.54 + 41 =
  40. 40.68 + 62 =

Answer key

  1. 67
  2. 57
  3. 157
  4. 63
  5. 94
  6. 83
  7. 137
  8. 148
  9. 151
  10. 98
  11. 102
  12. 103
  13. 104
  14. 84
  15. 85
  16. 55
  17. 113
  18. 130
  19. 40
  20. 64
  21. 92
  22. 112
  23. 91
  24. 124
  25. 98
  26. 75
  27. 72
  28. 110
  29. 70
  30. 102
  31. 67
  32. 56
  33. 87
  34. 89
  35. 45
  36. 96
  37. 82
  38. 163
  39. 95
  40. 130

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