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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 700 · 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. 1.27 + 53 =
  2. 2.34 + 58 =
  3. 3.43 + 19 =
  4. 4.80 + 54 =
  5. 5.44 + 31 =
  6. 6.29 + 58 =
  7. 7.77 + 45 =
  8. 8.50 + 57 =
  9. 9.32 + 82 =
  10. 10.46 + 66 =
  11. 11.21 + 19 =
  12. 12.37 + 65 =
  13. 13.28 + 14 =
  14. 14.29 + 54 =
  15. 15.36 + 27 =
  16. 16.81 + 75 =
  17. 17.75 + 41 =
  18. 18.50 + 67 =
  19. 19.27 + 56 =
  20. 20.52 + 12 =
  21. 21.69 + 22 =
  22. 22.58 + 49 =
  23. 23.70 + 71 =
  24. 24.39 + 71 =
  25. 25.52 + 34 =
  26. 26.57 + 75 =
  27. 27.77 + 23 =
  28. 28.72 + 73 =
  29. 29.41 + 27 =
  30. 30.25 + 75 =
  31. 31.74 + 27 =
  32. 32.55 + 77 =
  33. 33.51 + 82 =
  34. 34.48 + 31 =
  35. 35.47 + 71 =
  36. 36.62 + 15 =
  37. 37.29 + 76 =
  38. 38.82 + 21 =
  39. 39.32 + 77 =
  40. 40.28 + 67 =

Answer key

  1. 80
  2. 92
  3. 62
  4. 134
  5. 75
  6. 87
  7. 122
  8. 107
  9. 114
  10. 112
  11. 40
  12. 102
  13. 42
  14. 83
  15. 63
  16. 156
  17. 116
  18. 117
  19. 83
  20. 64
  21. 91
  22. 107
  23. 141
  24. 110
  25. 86
  26. 132
  27. 100
  28. 145
  29. 68
  30. 100
  31. 101
  32. 132
  33. 133
  34. 79
  35. 118
  36. 77
  37. 105
  38. 103
  39. 109
  40. 95

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