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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 824 · 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 + 65 =
  2. 2.22 + 87 =
  3. 3.22 + 23 =
  4. 4.57 + 46 =
  5. 5.26 + 52 =
  6. 6.83 + 35 =
  7. 7.50 + 79 =
  8. 8.61 + 16 =
  9. 9.43 + 82 =
  10. 10.86 + 89 =
  11. 11.55 + 12 =
  12. 12.78 + 22 =
  13. 13.27 + 85 =
  14. 14.74 + 12 =
  15. 15.81 + 72 =
  16. 16.61 + 71 =
  17. 17.60 + 65 =
  18. 18.47 + 61 =
  19. 19.51 + 53 =
  20. 20.80 + 77 =
  21. 21.66 + 28 =
  22. 22.33 + 44 =
  23. 23.36 + 29 =
  24. 24.60 + 17 =
  25. 25.81 + 86 =
  26. 26.74 + 51 =
  27. 27.42 + 28 =
  28. 28.53 + 46 =
  29. 29.73 + 81 =
  30. 30.40 + 31 =
  31. 31.22 + 42 =
  32. 32.64 + 18 =
  33. 33.39 + 71 =
  34. 34.58 + 49 =
  35. 35.44 + 61 =
  36. 36.67 + 21 =
  37. 37.30 + 18 =
  38. 38.65 + 29 =
  39. 39.43 + 42 =
  40. 40.24 + 42 =

Answer key

  1. 153
  2. 109
  3. 45
  4. 103
  5. 78
  6. 118
  7. 129
  8. 77
  9. 125
  10. 175
  11. 67
  12. 100
  13. 112
  14. 86
  15. 153
  16. 132
  17. 125
  18. 108
  19. 104
  20. 157
  21. 94
  22. 77
  23. 65
  24. 77
  25. 167
  26. 125
  27. 70
  28. 99
  29. 154
  30. 71
  31. 64
  32. 82
  33. 110
  34. 107
  35. 105
  36. 88
  37. 48
  38. 94
  39. 85
  40. 66

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