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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 753 · 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. 1.41 + 75 =
  2. 2.30 + 85 =
  3. 3.84 + 53 =
  4. 4.31 + 63 =
  5. 5.83 + 86 =
  6. 6.65 + 41 =
  7. 7.29 + 36 =
  8. 8.24 + 56 =
  9. 9.38 + 16 =
  10. 10.29 + 72 =
  11. 11.47 + 81 =
  12. 12.26 + 44 =
  13. 13.36 + 12 =
  14. 14.23 + 21 =
  15. 15.89 + 24 =
  16. 16.70 + 84 =
  17. 17.47 + 13 =
  18. 18.39 + 22 =
  19. 19.33 + 51 =
  20. 20.65 + 16 =
  21. 21.25 + 43 =
  22. 22.86 + 54 =
  23. 23.74 + 89 =
  24. 24.88 + 51 =
  25. 25.51 + 52 =
  26. 26.74 + 34 =
  27. 27.68 + 24 =
  28. 28.67 + 88 =
  29. 29.26 + 14 =
  30. 30.33 + 61 =
  31. 31.87 + 61 =
  32. 32.21 + 61 =
  33. 33.26 + 22 =
  34. 34.60 + 15 =
  35. 35.36 + 17 =
  36. 36.22 + 81 =
  37. 37.66 + 38 =
  38. 38.50 + 33 =
  39. 39.73 + 65 =
  40. 40.86 + 74 =

Answer key

  1. 116
  2. 115
  3. 137
  4. 94
  5. 169
  6. 106
  7. 65
  8. 80
  9. 54
  10. 101
  11. 128
  12. 70
  13. 48
  14. 44
  15. 113
  16. 154
  17. 60
  18. 61
  19. 84
  20. 81
  21. 68
  22. 140
  23. 163
  24. 139
  25. 103
  26. 108
  27. 92
  28. 155
  29. 40
  30. 94
  31. 148
  32. 82
  33. 48
  34. 75
  35. 53
  36. 103
  37. 104
  38. 83
  39. 138
  40. 160

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