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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 96 · 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 + 45 =
  2. 2.56 + 12 =
  3. 3.45 + 66 =
  4. 4.52 + 38 =
  5. 5.46 + 19 =
  6. 6.46 + 63 =
  7. 7.40 + 26 =
  8. 8.64 + 21 =
  9. 9.84 + 51 =
  10. 10.44 + 79 =
  11. 11.63 + 12 =
  12. 12.52 + 53 =
  13. 13.78 + 56 =
  14. 14.53 + 25 =
  15. 15.26 + 61 =
  16. 16.36 + 78 =
  17. 17.31 + 27 =
  18. 18.31 + 34 =
  19. 19.89 + 29 =
  20. 20.35 + 29 =
  21. 21.39 + 17 =
  22. 22.63 + 25 =
  23. 23.50 + 18 =
  24. 24.39 + 81 =
  25. 25.27 + 43 =
  26. 26.74 + 41 =
  27. 27.47 + 51 =
  28. 28.22 + 62 =
  29. 29.41 + 17 =
  30. 30.54 + 39 =
  31. 31.47 + 79 =
  32. 32.34 + 68 =
  33. 33.32 + 24 =
  34. 34.24 + 72 =
  35. 35.27 + 68 =
  36. 36.69 + 71 =
  37. 37.72 + 58 =
  38. 38.27 + 69 =
  39. 39.89 + 14 =
  40. 40.59 + 56 =

Answer key

  1. 107
  2. 68
  3. 111
  4. 90
  5. 65
  6. 109
  7. 66
  8. 85
  9. 135
  10. 123
  11. 75
  12. 105
  13. 134
  14. 78
  15. 87
  16. 114
  17. 58
  18. 65
  19. 118
  20. 64
  21. 56
  22. 88
  23. 68
  24. 120
  25. 70
  26. 115
  27. 98
  28. 84
  29. 58
  30. 93
  31. 126
  32. 102
  33. 56
  34. 96
  35. 95
  36. 140
  37. 130
  38. 96
  39. 103
  40. 115

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