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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 973 · 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. 1.22 + 71 =
  2. 2.60 + 32 =
  3. 3.73 + 38 =
  4. 4.27 + 66 =
  5. 5.57 + 14 =
  6. 6.55 + 26 =
  7. 7.83 + 63 =
  8. 8.42 + 32 =
  9. 9.30 + 18 =
  10. 10.36 + 47 =
  11. 11.52 + 67 =
  12. 12.64 + 17 =
  13. 13.74 + 69 =
  14. 14.89 + 28 =
  15. 15.34 + 44 =
  16. 16.46 + 68 =
  17. 17.38 + 54 =
  18. 18.28 + 16 =
  19. 19.23 + 16 =
  20. 20.31 + 88 =
  21. 21.77 + 26 =
  22. 22.44 + 15 =
  23. 23.43 + 64 =
  24. 24.67 + 13 =
  25. 25.82 + 79 =
  26. 26.43 + 37 =
  27. 27.73 + 37 =
  28. 28.66 + 25 =
  29. 29.57 + 56 =
  30. 30.75 + 67 =
  31. 31.45 + 51 =
  32. 32.83 + 19 =
  33. 33.63 + 78 =
  34. 34.77 + 29 =
  35. 35.30 + 42 =
  36. 36.80 + 46 =
  37. 37.72 + 35 =
  38. 38.52 + 51 =
  39. 39.64 + 23 =
  40. 40.84 + 16 =

Answer key

  1. 93
  2. 92
  3. 111
  4. 93
  5. 71
  6. 81
  7. 146
  8. 74
  9. 48
  10. 83
  11. 119
  12. 81
  13. 143
  14. 117
  15. 78
  16. 114
  17. 92
  18. 44
  19. 39
  20. 119
  21. 103
  22. 59
  23. 107
  24. 80
  25. 161
  26. 80
  27. 110
  28. 91
  29. 113
  30. 142
  31. 96
  32. 102
  33. 141
  34. 106
  35. 72
  36. 126
  37. 107
  38. 103
  39. 87
  40. 100

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