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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 601 · 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 + 48 =
  2. 2.25 + 48 =
  3. 3.23 + 62 =
  4. 4.46 + 61 =
  5. 5.23 + 38 =
  6. 6.35 + 56 =
  7. 7.47 + 21 =
  8. 8.84 + 69 =
  9. 9.44 + 79 =
  10. 10.37 + 59 =
  11. 11.85 + 27 =
  12. 12.57 + 58 =
  13. 13.38 + 46 =
  14. 14.38 + 83 =
  15. 15.24 + 33 =
  16. 16.62 + 28 =
  17. 17.59 + 71 =
  18. 18.21 + 15 =
  19. 19.27 + 57 =
  20. 20.37 + 47 =
  21. 21.58 + 75 =
  22. 22.44 + 83 =
  23. 23.80 + 69 =
  24. 24.62 + 66 =
  25. 25.73 + 37 =
  26. 26.22 + 87 =
  27. 27.33 + 17 =
  28. 28.51 + 16 =
  29. 29.86 + 68 =
  30. 30.40 + 48 =
  31. 31.21 + 87 =
  32. 32.25 + 57 =
  33. 33.33 + 25 =
  34. 34.53 + 61 =
  35. 35.73 + 86 =
  36. 36.59 + 14 =
  37. 37.40 + 21 =
  38. 38.66 + 63 =
  39. 39.78 + 12 =
  40. 40.33 + 75 =

Answer key

  1. 136
  2. 73
  3. 85
  4. 107
  5. 61
  6. 91
  7. 68
  8. 153
  9. 123
  10. 96
  11. 112
  12. 115
  13. 84
  14. 121
  15. 57
  16. 90
  17. 130
  18. 36
  19. 84
  20. 84
  21. 133
  22. 127
  23. 149
  24. 128
  25. 110
  26. 109
  27. 50
  28. 67
  29. 154
  30. 88
  31. 108
  32. 82
  33. 58
  34. 114
  35. 159
  36. 73
  37. 61
  38. 129
  39. 90
  40. 108

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