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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 826 · 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. 1.79 + 88 =
  2. 2.71 + 22 =
  3. 3.85 + 76 =
  4. 4.69 + 33 =
  5. 5.34 + 26 =
  6. 6.36 + 62 =
  7. 7.21 + 46 =
  8. 8.26 + 78 =
  9. 9.43 + 71 =
  10. 10.44 + 84 =
  11. 11.70 + 27 =
  12. 12.67 + 81 =
  13. 13.33 + 15 =
  14. 14.63 + 63 =
  15. 15.89 + 41 =
  16. 16.47 + 17 =
  17. 17.82 + 41 =
  18. 18.27 + 51 =
  19. 19.79 + 14 =
  20. 20.29 + 29 =
  21. 21.74 + 62 =
  22. 22.61 + 65 =
  23. 23.46 + 25 =
  24. 24.30 + 29 =
  25. 25.25 + 88 =
  26. 26.21 + 35 =
  27. 27.47 + 51 =
  28. 28.34 + 17 =
  29. 29.29 + 23 =
  30. 30.70 + 26 =
  31. 31.49 + 44 =
  32. 32.37 + 41 =
  33. 33.87 + 13 =
  34. 34.31 + 61 =
  35. 35.21 + 38 =
  36. 36.68 + 29 =
  37. 37.21 + 53 =
  38. 38.52 + 25 =
  39. 39.39 + 32 =
  40. 40.31 + 47 =

Answer key

  1. 167
  2. 93
  3. 161
  4. 102
  5. 60
  6. 98
  7. 67
  8. 104
  9. 114
  10. 128
  11. 97
  12. 148
  13. 48
  14. 126
  15. 130
  16. 64
  17. 123
  18. 78
  19. 93
  20. 58
  21. 136
  22. 126
  23. 71
  24. 59
  25. 113
  26. 56
  27. 98
  28. 51
  29. 52
  30. 96
  31. 93
  32. 78
  33. 100
  34. 92
  35. 59
  36. 97
  37. 74
  38. 77
  39. 71
  40. 78

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