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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 694 · 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. 1.67 + 34 =
  2. 2.28 + 77 =
  3. 3.27 + 24 =
  4. 4.27 + 41 =
  5. 5.48 + 43 =
  6. 6.40 + 84 =
  7. 7.76 + 59 =
  8. 8.72 + 87 =
  9. 9.22 + 13 =
  10. 10.59 + 48 =
  11. 11.40 + 64 =
  12. 12.45 + 21 =
  13. 13.75 + 25 =
  14. 14.22 + 18 =
  15. 15.38 + 41 =
  16. 16.21 + 86 =
  17. 17.87 + 81 =
  18. 18.39 + 42 =
  19. 19.44 + 34 =
  20. 20.36 + 78 =
  21. 21.25 + 41 =
  22. 22.49 + 44 =
  23. 23.41 + 63 =
  24. 24.86 + 19 =
  25. 25.24 + 28 =
  26. 26.52 + 81 =
  27. 27.41 + 64 =
  28. 28.24 + 37 =
  29. 29.45 + 56 =
  30. 30.41 + 27 =
  31. 31.53 + 73 =
  32. 32.75 + 59 =
  33. 33.45 + 84 =
  34. 34.53 + 79 =
  35. 35.60 + 85 =
  36. 36.64 + 43 =
  37. 37.35 + 73 =
  38. 38.33 + 89 =
  39. 39.23 + 41 =
  40. 40.70 + 73 =

Answer key

  1. 101
  2. 105
  3. 51
  4. 68
  5. 91
  6. 124
  7. 135
  8. 159
  9. 35
  10. 107
  11. 104
  12. 66
  13. 100
  14. 40
  15. 79
  16. 107
  17. 168
  18. 81
  19. 78
  20. 114
  21. 66
  22. 93
  23. 104
  24. 105
  25. 52
  26. 133
  27. 105
  28. 61
  29. 101
  30. 68
  31. 126
  32. 134
  33. 129
  34. 132
  35. 145
  36. 107
  37. 108
  38. 122
  39. 64
  40. 143

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