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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 832 · 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. 1.76 + 76 =
  2. 2.87 + 17 =
  3. 3.41 + 24 =
  4. 4.29 + 25 =
  5. 5.32 + 57 =
  6. 6.85 + 47 =
  7. 7.86 + 33 =
  8. 8.34 + 39 =
  9. 9.43 + 62 =
  10. 10.80 + 46 =
  11. 11.74 + 61 =
  12. 12.49 + 81 =
  13. 13.64 + 17 =
  14. 14.59 + 59 =
  15. 15.29 + 22 =
  16. 16.74 + 24 =
  17. 17.81 + 41 =
  18. 18.52 + 41 =
  19. 19.80 + 15 =
  20. 20.41 + 47 =
  21. 21.33 + 49 =
  22. 22.75 + 24 =
  23. 23.86 + 24 =
  24. 24.28 + 15 =
  25. 25.32 + 23 =
  26. 26.76 + 52 =
  27. 27.41 + 51 =
  28. 28.29 + 72 =
  29. 29.37 + 89 =
  30. 30.82 + 19 =
  31. 31.87 + 27 =
  32. 32.57 + 21 =
  33. 33.76 + 28 =
  34. 34.32 + 29 =
  35. 35.64 + 86 =
  36. 36.52 + 37 =
  37. 37.60 + 69 =
  38. 38.79 + 31 =
  39. 39.84 + 44 =
  40. 40.84 + 84 =

Answer key

  1. 152
  2. 104
  3. 65
  4. 54
  5. 89
  6. 132
  7. 119
  8. 73
  9. 105
  10. 126
  11. 135
  12. 130
  13. 81
  14. 118
  15. 51
  16. 98
  17. 122
  18. 93
  19. 95
  20. 88
  21. 82
  22. 99
  23. 110
  24. 43
  25. 55
  26. 128
  27. 92
  28. 101
  29. 126
  30. 101
  31. 114
  32. 78
  33. 104
  34. 61
  35. 150
  36. 89
  37. 129
  38. 110
  39. 128
  40. 168

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