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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 300 · 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. 1.84 + 48 =
  2. 2.84 + 61 =
  3. 3.82 + 15 =
  4. 4.26 + 65 =
  5. 5.44 + 82 =
  6. 6.83 + 31 =
  7. 7.52 + 37 =
  8. 8.54 + 28 =
  9. 9.29 + 26 =
  10. 10.29 + 45 =
  11. 11.82 + 49 =
  12. 12.22 + 21 =
  13. 13.62 + 77 =
  14. 14.62 + 71 =
  15. 15.68 + 85 =
  16. 16.21 + 36 =
  17. 17.28 + 17 =
  18. 18.50 + 43 =
  19. 19.76 + 19 =
  20. 20.46 + 38 =
  21. 21.77 + 24 =
  22. 22.24 + 46 =
  23. 23.21 + 75 =
  24. 24.21 + 44 =
  25. 25.26 + 73 =
  26. 26.22 + 14 =
  27. 27.24 + 34 =
  28. 28.25 + 86 =
  29. 29.59 + 48 =
  30. 30.81 + 15 =
  31. 31.34 + 82 =
  32. 32.29 + 36 =
  33. 33.60 + 53 =
  34. 34.30 + 44 =
  35. 35.86 + 82 =
  36. 36.24 + 43 =
  37. 37.24 + 51 =
  38. 38.27 + 44 =
  39. 39.42 + 75 =
  40. 40.77 + 19 =

Answer key

  1. 132
  2. 145
  3. 97
  4. 91
  5. 126
  6. 114
  7. 89
  8. 82
  9. 55
  10. 74
  11. 131
  12. 43
  13. 139
  14. 133
  15. 153
  16. 57
  17. 45
  18. 93
  19. 95
  20. 84
  21. 101
  22. 70
  23. 96
  24. 65
  25. 99
  26. 36
  27. 58
  28. 111
  29. 107
  30. 96
  31. 116
  32. 65
  33. 113
  34. 74
  35. 168
  36. 67
  37. 75
  38. 71
  39. 117
  40. 96

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