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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 776 · 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. 1.62 + 49 =
  2. 2.48 + 31 =
  3. 3.79 + 43 =
  4. 4.43 + 13 =
  5. 5.33 + 68 =
  6. 6.60 + 88 =
  7. 7.73 + 53 =
  8. 8.69 + 26 =
  9. 9.21 + 44 =
  10. 10.41 + 19 =
  11. 11.72 + 35 =
  12. 12.62 + 77 =
  13. 13.86 + 25 =
  14. 14.57 + 39 =
  15. 15.59 + 75 =
  16. 16.35 + 24 =
  17. 17.34 + 44 =
  18. 18.73 + 72 =
  19. 19.29 + 56 =
  20. 20.24 + 25 =
  21. 21.39 + 45 =
  22. 22.47 + 66 =
  23. 23.45 + 44 =
  24. 24.55 + 49 =
  25. 25.23 + 17 =
  26. 26.86 + 35 =
  27. 27.27 + 89 =
  28. 28.31 + 59 =
  29. 29.78 + 69 =
  30. 30.53 + 24 =
  31. 31.23 + 14 =
  32. 32.38 + 64 =
  33. 33.24 + 54 =
  34. 34.64 + 43 =
  35. 35.45 + 67 =
  36. 36.76 + 21 =
  37. 37.48 + 82 =
  38. 38.38 + 49 =
  39. 39.55 + 66 =
  40. 40.69 + 63 =

Answer key

  1. 111
  2. 79
  3. 122
  4. 56
  5. 101
  6. 148
  7. 126
  8. 95
  9. 65
  10. 60
  11. 107
  12. 139
  13. 111
  14. 96
  15. 134
  16. 59
  17. 78
  18. 145
  19. 85
  20. 49
  21. 84
  22. 113
  23. 89
  24. 104
  25. 40
  26. 121
  27. 116
  28. 90
  29. 147
  30. 77
  31. 37
  32. 102
  33. 78
  34. 107
  35. 112
  36. 97
  37. 130
  38. 87
  39. 121
  40. 132

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