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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 948 · 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. 1.74 + 74 =
  2. 2.28 + 56 =
  3. 3.36 + 74 =
  4. 4.33 + 57 =
  5. 5.38 + 54 =
  6. 6.32 + 12 =
  7. 7.63 + 27 =
  8. 8.63 + 32 =
  9. 9.53 + 16 =
  10. 10.69 + 41 =
  11. 11.89 + 57 =
  12. 12.49 + 37 =
  13. 13.27 + 43 =
  14. 14.57 + 68 =
  15. 15.29 + 34 =
  16. 16.73 + 51 =
  17. 17.62 + 21 =
  18. 18.72 + 89 =
  19. 19.43 + 33 =
  20. 20.55 + 22 =
  21. 21.82 + 45 =
  22. 22.34 + 57 =
  23. 23.35 + 27 =
  24. 24.59 + 59 =
  25. 25.65 + 39 =
  26. 26.25 + 14 =
  27. 27.78 + 65 =
  28. 28.50 + 85 =
  29. 29.86 + 44 =
  30. 30.83 + 84 =
  31. 31.59 + 28 =
  32. 32.52 + 58 =
  33. 33.80 + 31 =
  34. 34.56 + 41 =
  35. 35.55 + 32 =
  36. 36.22 + 53 =
  37. 37.34 + 46 =
  38. 38.82 + 29 =
  39. 39.28 + 25 =
  40. 40.76 + 46 =

Answer key

  1. 148
  2. 84
  3. 110
  4. 90
  5. 92
  6. 44
  7. 90
  8. 95
  9. 69
  10. 110
  11. 146
  12. 86
  13. 70
  14. 125
  15. 63
  16. 124
  17. 83
  18. 161
  19. 76
  20. 77
  21. 127
  22. 91
  23. 62
  24. 118
  25. 104
  26. 39
  27. 143
  28. 135
  29. 130
  30. 167
  31. 87
  32. 110
  33. 111
  34. 97
  35. 87
  36. 75
  37. 80
  38. 111
  39. 53
  40. 122

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