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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 510 · 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. 1.34 + 85 =
  2. 2.60 + 42 =
  3. 3.32 + 41 =
  4. 4.82 + 16 =
  5. 5.66 + 29 =
  6. 6.80 + 52 =
  7. 7.78 + 41 =
  8. 8.74 + 25 =
  9. 9.83 + 42 =
  10. 10.42 + 71 =
  11. 11.73 + 61 =
  12. 12.63 + 41 =
  13. 13.24 + 29 =
  14. 14.55 + 24 =
  15. 15.64 + 44 =
  16. 16.44 + 35 =
  17. 17.81 + 81 =
  18. 18.54 + 12 =
  19. 19.80 + 19 =
  20. 20.47 + 62 =
  21. 21.24 + 88 =
  22. 22.71 + 56 =
  23. 23.31 + 65 =
  24. 24.48 + 14 =
  25. 25.69 + 44 =
  26. 26.29 + 69 =
  27. 27.64 + 46 =
  28. 28.29 + 61 =
  29. 29.46 + 28 =
  30. 30.48 + 78 =
  31. 31.41 + 77 =
  32. 32.25 + 76 =
  33. 33.31 + 71 =
  34. 34.26 + 29 =
  35. 35.86 + 86 =
  36. 36.27 + 23 =
  37. 37.33 + 24 =
  38. 38.42 + 89 =
  39. 39.53 + 71 =
  40. 40.64 + 61 =

Answer key

  1. 119
  2. 102
  3. 73
  4. 98
  5. 95
  6. 132
  7. 119
  8. 99
  9. 125
  10. 113
  11. 134
  12. 104
  13. 53
  14. 79
  15. 108
  16. 79
  17. 162
  18. 66
  19. 99
  20. 109
  21. 112
  22. 127
  23. 96
  24. 62
  25. 113
  26. 98
  27. 110
  28. 90
  29. 74
  30. 126
  31. 118
  32. 101
  33. 102
  34. 55
  35. 172
  36. 50
  37. 57
  38. 131
  39. 124
  40. 125

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