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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 177 · 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. 1.88 + 81 =
  2. 2.74 + 22 =
  3. 3.28 + 46 =
  4. 4.36 + 38 =
  5. 5.24 + 59 =
  6. 6.82 + 68 =
  7. 7.50 + 53 =
  8. 8.39 + 61 =
  9. 9.55 + 18 =
  10. 10.88 + 35 =
  11. 11.51 + 34 =
  12. 12.21 + 19 =
  13. 13.73 + 24 =
  14. 14.70 + 31 =
  15. 15.66 + 33 =
  16. 16.43 + 16 =
  17. 17.53 + 85 =
  18. 18.61 + 32 =
  19. 19.73 + 46 =
  20. 20.83 + 15 =
  21. 21.41 + 26 =
  22. 22.57 + 74 =
  23. 23.56 + 53 =
  24. 24.56 + 71 =
  25. 25.72 + 68 =
  26. 26.33 + 38 =
  27. 27.73 + 84 =
  28. 28.58 + 61 =
  29. 29.60 + 84 =
  30. 30.88 + 66 =
  31. 31.30 + 35 =
  32. 32.87 + 19 =
  33. 33.62 + 62 =
  34. 34.68 + 12 =
  35. 35.86 + 59 =
  36. 36.44 + 72 =
  37. 37.84 + 25 =
  38. 38.22 + 21 =
  39. 39.89 + 41 =
  40. 40.69 + 55 =

Answer key

  1. 169
  2. 96
  3. 74
  4. 74
  5. 83
  6. 150
  7. 103
  8. 100
  9. 73
  10. 123
  11. 85
  12. 40
  13. 97
  14. 101
  15. 99
  16. 59
  17. 138
  18. 93
  19. 119
  20. 98
  21. 67
  22. 131
  23. 109
  24. 127
  25. 140
  26. 71
  27. 157
  28. 119
  29. 144
  30. 154
  31. 65
  32. 106
  33. 124
  34. 80
  35. 145
  36. 116
  37. 109
  38. 43
  39. 130
  40. 124

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