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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 162 · 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. 1.26 + 22 =
  2. 2.42 + 51 =
  3. 3.51 + 74 =
  4. 4.39 + 38 =
  5. 5.73 + 82 =
  6. 6.29 + 36 =
  7. 7.70 + 31 =
  8. 8.29 + 66 =
  9. 9.71 + 44 =
  10. 10.88 + 29 =
  11. 11.82 + 65 =
  12. 12.44 + 37 =
  13. 13.84 + 31 =
  14. 14.89 + 27 =
  15. 15.55 + 63 =
  16. 16.30 + 37 =
  17. 17.87 + 32 =
  18. 18.49 + 29 =
  19. 19.75 + 25 =
  20. 20.63 + 34 =
  21. 21.67 + 78 =
  22. 22.41 + 13 =
  23. 23.71 + 33 =
  24. 24.48 + 17 =
  25. 25.47 + 35 =
  26. 26.85 + 63 =
  27. 27.36 + 43 =
  28. 28.36 + 66 =
  29. 29.25 + 54 =
  30. 30.54 + 34 =
  31. 31.87 + 13 =
  32. 32.35 + 83 =
  33. 33.31 + 33 =
  34. 34.46 + 12 =
  35. 35.86 + 23 =
  36. 36.33 + 25 =
  37. 37.60 + 81 =
  38. 38.35 + 88 =
  39. 39.87 + 57 =
  40. 40.86 + 28 =

Answer key

  1. 48
  2. 93
  3. 125
  4. 77
  5. 155
  6. 65
  7. 101
  8. 95
  9. 115
  10. 117
  11. 147
  12. 81
  13. 115
  14. 116
  15. 118
  16. 67
  17. 119
  18. 78
  19. 100
  20. 97
  21. 145
  22. 54
  23. 104
  24. 65
  25. 82
  26. 148
  27. 79
  28. 102
  29. 79
  30. 88
  31. 100
  32. 118
  33. 64
  34. 58
  35. 109
  36. 58
  37. 141
  38. 123
  39. 144
  40. 114

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