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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 958 · 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. 1.23 + 72 =
  2. 2.53 + 55 =
  3. 3.84 + 41 =
  4. 4.46 + 22 =
  5. 5.21 + 32 =
  6. 6.87 + 39 =
  7. 7.34 + 51 =
  8. 8.22 + 44 =
  9. 9.49 + 19 =
  10. 10.38 + 78 =
  11. 11.41 + 76 =
  12. 12.31 + 79 =
  13. 13.23 + 33 =
  14. 14.80 + 86 =
  15. 15.60 + 73 =
  16. 16.76 + 54 =
  17. 17.82 + 84 =
  18. 18.50 + 51 =
  19. 19.75 + 85 =
  20. 20.43 + 24 =
  21. 21.28 + 71 =
  22. 22.37 + 53 =
  23. 23.82 + 81 =
  24. 24.34 + 24 =
  25. 25.84 + 43 =
  26. 26.52 + 55 =
  27. 27.58 + 71 =
  28. 28.74 + 56 =
  29. 29.49 + 84 =
  30. 30.41 + 74 =
  31. 31.53 + 58 =
  32. 32.30 + 82 =
  33. 33.89 + 41 =
  34. 34.46 + 77 =
  35. 35.24 + 48 =
  36. 36.54 + 14 =
  37. 37.21 + 25 =
  38. 38.27 + 31 =
  39. 39.21 + 44 =
  40. 40.38 + 18 =

Answer key

  1. 95
  2. 108
  3. 125
  4. 68
  5. 53
  6. 126
  7. 85
  8. 66
  9. 68
  10. 116
  11. 117
  12. 110
  13. 56
  14. 166
  15. 133
  16. 130
  17. 166
  18. 101
  19. 160
  20. 67
  21. 99
  22. 90
  23. 163
  24. 58
  25. 127
  26. 107
  27. 129
  28. 130
  29. 133
  30. 115
  31. 111
  32. 112
  33. 130
  34. 123
  35. 72
  36. 68
  37. 46
  38. 58
  39. 65
  40. 56

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