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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 506 · 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. 1.76 + 54 =
  2. 2.84 + 21 =
  3. 3.52 + 65 =
  4. 4.42 + 14 =
  5. 5.29 + 48 =
  6. 6.60 + 73 =
  7. 7.83 + 19 =
  8. 8.53 + 72 =
  9. 9.23 + 68 =
  10. 10.88 + 49 =
  11. 11.56 + 69 =
  12. 12.80 + 17 =
  13. 13.70 + 16 =
  14. 14.35 + 38 =
  15. 15.29 + 51 =
  16. 16.45 + 17 =
  17. 17.71 + 33 =
  18. 18.76 + 31 =
  19. 19.34 + 83 =
  20. 20.26 + 24 =
  21. 21.58 + 26 =
  22. 22.24 + 62 =
  23. 23.60 + 14 =
  24. 24.33 + 15 =
  25. 25.40 + 55 =
  26. 26.31 + 81 =
  27. 27.29 + 18 =
  28. 28.51 + 76 =
  29. 29.57 + 17 =
  30. 30.46 + 56 =
  31. 31.68 + 23 =
  32. 32.66 + 46 =
  33. 33.75 + 26 =
  34. 34.81 + 46 =
  35. 35.80 + 44 =
  36. 36.36 + 14 =
  37. 37.29 + 42 =
  38. 38.48 + 18 =
  39. 39.62 + 31 =
  40. 40.28 + 83 =

Answer key

  1. 130
  2. 105
  3. 117
  4. 56
  5. 77
  6. 133
  7. 102
  8. 125
  9. 91
  10. 137
  11. 125
  12. 97
  13. 86
  14. 73
  15. 80
  16. 62
  17. 104
  18. 107
  19. 117
  20. 50
  21. 84
  22. 86
  23. 74
  24. 48
  25. 95
  26. 112
  27. 47
  28. 127
  29. 74
  30. 102
  31. 91
  32. 112
  33. 101
  34. 127
  35. 124
  36. 50
  37. 71
  38. 66
  39. 93
  40. 111

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