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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 308 · 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. 1.85 + 14 =
  2. 2.76 + 52 =
  3. 3.56 + 63 =
  4. 4.66 + 75 =
  5. 5.37 + 74 =
  6. 6.38 + 28 =
  7. 7.40 + 85 =
  8. 8.62 + 46 =
  9. 9.26 + 33 =
  10. 10.40 + 22 =
  11. 11.74 + 48 =
  12. 12.58 + 29 =
  13. 13.66 + 65 =
  14. 14.89 + 69 =
  15. 15.29 + 65 =
  16. 16.64 + 77 =
  17. 17.82 + 17 =
  18. 18.48 + 12 =
  19. 19.27 + 74 =
  20. 20.38 + 48 =
  21. 21.38 + 17 =
  22. 22.67 + 71 =
  23. 23.34 + 21 =
  24. 24.38 + 54 =
  25. 25.45 + 47 =
  26. 26.43 + 12 =
  27. 27.69 + 84 =
  28. 28.41 + 42 =
  29. 29.34 + 81 =
  30. 30.84 + 83 =
  31. 31.21 + 26 =
  32. 32.50 + 21 =
  33. 33.30 + 83 =
  34. 34.61 + 82 =
  35. 35.81 + 43 =
  36. 36.24 + 63 =
  37. 37.88 + 62 =
  38. 38.68 + 28 =
  39. 39.34 + 26 =
  40. 40.81 + 67 =

Answer key

  1. 99
  2. 128
  3. 119
  4. 141
  5. 111
  6. 66
  7. 125
  8. 108
  9. 59
  10. 62
  11. 122
  12. 87
  13. 131
  14. 158
  15. 94
  16. 141
  17. 99
  18. 60
  19. 101
  20. 86
  21. 55
  22. 138
  23. 55
  24. 92
  25. 92
  26. 55
  27. 153
  28. 83
  29. 115
  30. 167
  31. 47
  32. 71
  33. 113
  34. 143
  35. 124
  36. 87
  37. 150
  38. 96
  39. 60
  40. 148

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