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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 976 · 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. 1.36 + 54 =
  2. 2.24 + 76 =
  3. 3.36 + 61 =
  4. 4.28 + 72 =
  5. 5.55 + 63 =
  6. 6.66 + 62 =
  7. 7.37 + 21 =
  8. 8.37 + 73 =
  9. 9.83 + 55 =
  10. 10.32 + 31 =
  11. 11.27 + 89 =
  12. 12.60 + 53 =
  13. 13.29 + 41 =
  14. 14.67 + 58 =
  15. 15.74 + 75 =
  16. 16.45 + 32 =
  17. 17.60 + 23 =
  18. 18.38 + 61 =
  19. 19.46 + 13 =
  20. 20.47 + 61 =
  21. 21.69 + 15 =
  22. 22.84 + 19 =
  23. 23.79 + 51 =
  24. 24.76 + 57 =
  25. 25.72 + 32 =
  26. 26.57 + 62 =
  27. 27.21 + 42 =
  28. 28.62 + 82 =
  29. 29.32 + 51 =
  30. 30.31 + 74 =
  31. 31.29 + 32 =
  32. 32.80 + 87 =
  33. 33.78 + 84 =
  34. 34.27 + 32 =
  35. 35.44 + 51 =
  36. 36.29 + 15 =
  37. 37.82 + 31 =
  38. 38.54 + 59 =
  39. 39.81 + 51 =
  40. 40.35 + 26 =

Answer key

  1. 90
  2. 100
  3. 97
  4. 100
  5. 118
  6. 128
  7. 58
  8. 110
  9. 138
  10. 63
  11. 116
  12. 113
  13. 70
  14. 125
  15. 149
  16. 77
  17. 83
  18. 99
  19. 59
  20. 108
  21. 84
  22. 103
  23. 130
  24. 133
  25. 104
  26. 119
  27. 63
  28. 144
  29. 83
  30. 105
  31. 61
  32. 167
  33. 162
  34. 59
  35. 95
  36. 44
  37. 113
  38. 113
  39. 132
  40. 61

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