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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 493 · 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. 1.34 + 52 =
  2. 2.30 + 79 =
  3. 3.85 + 56 =
  4. 4.84 + 62 =
  5. 5.35 + 19 =
  6. 6.31 + 66 =
  7. 7.75 + 36 =
  8. 8.65 + 43 =
  9. 9.39 + 22 =
  10. 10.29 + 19 =
  11. 11.44 + 55 =
  12. 12.41 + 51 =
  13. 13.59 + 72 =
  14. 14.23 + 61 =
  15. 15.69 + 21 =
  16. 16.61 + 27 =
  17. 17.32 + 73 =
  18. 18.36 + 44 =
  19. 19.36 + 56 =
  20. 20.39 + 32 =
  21. 21.36 + 88 =
  22. 22.58 + 13 =
  23. 23.77 + 71 =
  24. 24.81 + 78 =
  25. 25.53 + 24 =
  26. 26.72 + 37 =
  27. 27.82 + 88 =
  28. 28.56 + 23 =
  29. 29.74 + 47 =
  30. 30.56 + 48 =
  31. 31.35 + 16 =
  32. 32.23 + 57 =
  33. 33.30 + 81 =
  34. 34.88 + 65 =
  35. 35.24 + 33 =
  36. 36.50 + 77 =
  37. 37.34 + 76 =
  38. 38.72 + 84 =
  39. 39.41 + 24 =
  40. 40.63 + 35 =

Answer key

  1. 86
  2. 109
  3. 141
  4. 146
  5. 54
  6. 97
  7. 111
  8. 108
  9. 61
  10. 48
  11. 99
  12. 92
  13. 131
  14. 84
  15. 90
  16. 88
  17. 105
  18. 80
  19. 92
  20. 71
  21. 124
  22. 71
  23. 148
  24. 159
  25. 77
  26. 109
  27. 170
  28. 79
  29. 121
  30. 104
  31. 51
  32. 80
  33. 111
  34. 153
  35. 57
  36. 127
  37. 110
  38. 156
  39. 65
  40. 98

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