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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 941 · 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. 1.53 + 41 =
  2. 2.44 + 22 =
  3. 3.61 + 69 =
  4. 4.73 + 36 =
  5. 5.45 + 41 =
  6. 6.35 + 75 =
  7. 7.79 + 74 =
  8. 8.70 + 66 =
  9. 9.72 + 16 =
  10. 10.72 + 78 =
  11. 11.27 + 22 =
  12. 12.21 + 66 =
  13. 13.41 + 49 =
  14. 14.30 + 35 =
  15. 15.25 + 81 =
  16. 16.72 + 12 =
  17. 17.36 + 18 =
  18. 18.47 + 21 =
  19. 19.29 + 46 =
  20. 20.50 + 21 =
  21. 21.43 + 51 =
  22. 22.48 + 37 =
  23. 23.34 + 61 =
  24. 24.25 + 32 =
  25. 25.68 + 41 =
  26. 26.42 + 69 =
  27. 27.37 + 38 =
  28. 28.64 + 43 =
  29. 29.60 + 13 =
  30. 30.54 + 55 =
  31. 31.74 + 64 =
  32. 32.71 + 65 =
  33. 33.67 + 68 =
  34. 34.80 + 87 =
  35. 35.39 + 21 =
  36. 36.81 + 81 =
  37. 37.77 + 25 =
  38. 38.86 + 13 =
  39. 39.44 + 89 =
  40. 40.41 + 22 =

Answer key

  1. 94
  2. 66
  3. 130
  4. 109
  5. 86
  6. 110
  7. 153
  8. 136
  9. 88
  10. 150
  11. 49
  12. 87
  13. 90
  14. 65
  15. 106
  16. 84
  17. 54
  18. 68
  19. 75
  20. 71
  21. 94
  22. 85
  23. 95
  24. 57
  25. 109
  26. 111
  27. 75
  28. 107
  29. 73
  30. 109
  31. 138
  32. 136
  33. 135
  34. 167
  35. 60
  36. 162
  37. 102
  38. 99
  39. 133
  40. 63

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