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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 603 · 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. 1.69 + 41 =
  2. 2.58 + 25 =
  3. 3.54 + 48 =
  4. 4.61 + 12 =
  5. 5.35 + 12 =
  6. 6.28 + 83 =
  7. 7.35 + 32 =
  8. 8.35 + 64 =
  9. 9.69 + 17 =
  10. 10.83 + 41 =
  11. 11.55 + 49 =
  12. 12.23 + 64 =
  13. 13.31 + 31 =
  14. 14.28 + 17 =
  15. 15.77 + 41 =
  16. 16.21 + 42 =
  17. 17.64 + 13 =
  18. 18.87 + 46 =
  19. 19.27 + 22 =
  20. 20.82 + 25 =
  21. 21.59 + 64 =
  22. 22.31 + 14 =
  23. 23.35 + 35 =
  24. 24.43 + 74 =
  25. 25.76 + 33 =
  26. 26.84 + 32 =
  27. 27.49 + 38 =
  28. 28.45 + 37 =
  29. 29.84 + 73 =
  30. 30.85 + 55 =
  31. 31.26 + 33 =
  32. 32.57 + 64 =
  33. 33.49 + 54 =
  34. 34.51 + 66 =
  35. 35.68 + 65 =
  36. 36.29 + 62 =
  37. 37.56 + 42 =
  38. 38.41 + 43 =
  39. 39.25 + 61 =
  40. 40.23 + 72 =

Answer key

  1. 110
  2. 83
  3. 102
  4. 73
  5. 47
  6. 111
  7. 67
  8. 99
  9. 86
  10. 124
  11. 104
  12. 87
  13. 62
  14. 45
  15. 118
  16. 63
  17. 77
  18. 133
  19. 49
  20. 107
  21. 123
  22. 45
  23. 70
  24. 117
  25. 109
  26. 116
  27. 87
  28. 82
  29. 157
  30. 140
  31. 59
  32. 121
  33. 103
  34. 117
  35. 133
  36. 91
  37. 98
  38. 84
  39. 86
  40. 95

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