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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 886 · 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. 1.68 + 49 =
  2. 2.24 + 31 =
  3. 3.28 + 14 =
  4. 4.21 + 74 =
  5. 5.37 + 75 =
  6. 6.89 + 71 =
  7. 7.50 + 64 =
  8. 8.73 + 48 =
  9. 9.32 + 48 =
  10. 10.74 + 27 =
  11. 11.34 + 36 =
  12. 12.85 + 58 =
  13. 13.32 + 54 =
  14. 14.64 + 29 =
  15. 15.55 + 86 =
  16. 16.83 + 38 =
  17. 17.23 + 41 =
  18. 18.54 + 41 =
  19. 19.22 + 77 =
  20. 20.75 + 51 =
  21. 21.23 + 49 =
  22. 22.61 + 23 =
  23. 23.33 + 27 =
  24. 24.57 + 38 =
  25. 25.55 + 76 =
  26. 26.52 + 12 =
  27. 27.57 + 83 =
  28. 28.73 + 64 =
  29. 29.61 + 67 =
  30. 30.35 + 18 =
  31. 31.58 + 24 =
  32. 32.55 + 21 =
  33. 33.29 + 82 =
  34. 34.43 + 34 =
  35. 35.36 + 67 =
  36. 36.69 + 18 =
  37. 37.21 + 15 =
  38. 38.38 + 81 =
  39. 39.30 + 79 =
  40. 40.87 + 33 =

Answer key

  1. 117
  2. 55
  3. 42
  4. 95
  5. 112
  6. 160
  7. 114
  8. 121
  9. 80
  10. 101
  11. 70
  12. 143
  13. 86
  14. 93
  15. 141
  16. 121
  17. 64
  18. 95
  19. 99
  20. 126
  21. 72
  22. 84
  23. 60
  24. 95
  25. 131
  26. 64
  27. 140
  28. 137
  29. 128
  30. 53
  31. 82
  32. 76
  33. 111
  34. 77
  35. 103
  36. 87
  37. 36
  38. 119
  39. 109
  40. 120

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