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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 315 · 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 + 75 =
  2. 2.72 + 13 =
  3. 3.77 + 24 =
  4. 4.29 + 18 =
  5. 5.25 + 32 =
  6. 6.66 + 47 =
  7. 7.25 + 19 =
  8. 8.61 + 72 =
  9. 9.63 + 46 =
  10. 10.29 + 38 =
  11. 11.45 + 46 =
  12. 12.60 + 54 =
  13. 13.40 + 38 =
  14. 14.22 + 72 =
  15. 15.86 + 44 =
  16. 16.27 + 67 =
  17. 17.47 + 64 =
  18. 18.71 + 75 =
  19. 19.56 + 66 =
  20. 20.77 + 49 =
  21. 21.39 + 24 =
  22. 22.55 + 32 =
  23. 23.35 + 85 =
  24. 24.39 + 55 =
  25. 25.86 + 32 =
  26. 26.32 + 37 =
  27. 27.85 + 72 =
  28. 28.59 + 66 =
  29. 29.21 + 88 =
  30. 30.50 + 37 =
  31. 31.42 + 66 =
  32. 32.40 + 16 =
  33. 33.47 + 85 =
  34. 34.56 + 22 =
  35. 35.29 + 41 =
  36. 36.41 + 71 =
  37. 37.23 + 54 =
  38. 38.66 + 33 =
  39. 39.74 + 33 =
  40. 40.26 + 31 =

Answer key

  1. 163
  2. 85
  3. 101
  4. 47
  5. 57
  6. 113
  7. 44
  8. 133
  9. 109
  10. 67
  11. 91
  12. 114
  13. 78
  14. 94
  15. 130
  16. 94
  17. 111
  18. 146
  19. 122
  20. 126
  21. 63
  22. 87
  23. 120
  24. 94
  25. 118
  26. 69
  27. 157
  28. 125
  29. 109
  30. 87
  31. 108
  32. 56
  33. 132
  34. 78
  35. 70
  36. 112
  37. 77
  38. 99
  39. 107
  40. 57

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