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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 82 · 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. 1.73 + 36 =
  2. 2.24 + 55 =
  3. 3.34 + 44 =
  4. 4.67 + 57 =
  5. 5.62 + 26 =
  6. 6.31 + 83 =
  7. 7.25 + 77 =
  8. 8.47 + 77 =
  9. 9.62 + 32 =
  10. 10.67 + 17 =
  11. 11.25 + 76 =
  12. 12.74 + 77 =
  13. 13.58 + 55 =
  14. 14.61 + 59 =
  15. 15.28 + 43 =
  16. 16.43 + 25 =
  17. 17.32 + 61 =
  18. 18.44 + 24 =
  19. 19.57 + 32 =
  20. 20.77 + 47 =
  21. 21.24 + 75 =
  22. 22.53 + 46 =
  23. 23.54 + 57 =
  24. 24.77 + 23 =
  25. 25.37 + 82 =
  26. 26.69 + 21 =
  27. 27.22 + 45 =
  28. 28.34 + 25 =
  29. 29.38 + 77 =
  30. 30.54 + 44 =
  31. 31.37 + 17 =
  32. 32.74 + 41 =
  33. 33.40 + 72 =
  34. 34.64 + 68 =
  35. 35.80 + 75 =
  36. 36.30 + 79 =
  37. 37.79 + 27 =
  38. 38.72 + 19 =
  39. 39.52 + 65 =
  40. 40.64 + 28 =

Answer key

  1. 109
  2. 79
  3. 78
  4. 124
  5. 88
  6. 114
  7. 102
  8. 124
  9. 94
  10. 84
  11. 101
  12. 151
  13. 113
  14. 120
  15. 71
  16. 68
  17. 93
  18. 68
  19. 89
  20. 124
  21. 99
  22. 99
  23. 111
  24. 100
  25. 119
  26. 90
  27. 67
  28. 59
  29. 115
  30. 98
  31. 54
  32. 115
  33. 112
  34. 132
  35. 155
  36. 109
  37. 106
  38. 91
  39. 117
  40. 92

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