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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 982 · 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. 1.52 + 51 =
  2. 2.30 + 41 =
  3. 3.76 + 19 =
  4. 4.27 + 54 =
  5. 5.40 + 57 =
  6. 6.69 + 89 =
  7. 7.46 + 67 =
  8. 8.62 + 79 =
  9. 9.73 + 58 =
  10. 10.60 + 35 =
  11. 11.22 + 71 =
  12. 12.53 + 76 =
  13. 13.62 + 44 =
  14. 14.36 + 42 =
  15. 15.39 + 84 =
  16. 16.40 + 51 =
  17. 17.43 + 34 =
  18. 18.37 + 56 =
  19. 19.46 + 88 =
  20. 20.87 + 84 =
  21. 21.85 + 24 =
  22. 22.79 + 19 =
  23. 23.33 + 61 =
  24. 24.63 + 71 =
  25. 25.30 + 69 =
  26. 26.68 + 51 =
  27. 27.52 + 83 =
  28. 28.74 + 28 =
  29. 29.42 + 21 =
  30. 30.76 + 38 =
  31. 31.59 + 41 =
  32. 32.21 + 55 =
  33. 33.38 + 57 =
  34. 34.79 + 47 =
  35. 35.65 + 19 =
  36. 36.80 + 79 =
  37. 37.52 + 56 =
  38. 38.30 + 36 =
  39. 39.85 + 64 =
  40. 40.26 + 14 =

Answer key

  1. 103
  2. 71
  3. 95
  4. 81
  5. 97
  6. 158
  7. 113
  8. 141
  9. 131
  10. 95
  11. 93
  12. 129
  13. 106
  14. 78
  15. 123
  16. 91
  17. 77
  18. 93
  19. 134
  20. 171
  21. 109
  22. 98
  23. 94
  24. 134
  25. 99
  26. 119
  27. 135
  28. 102
  29. 63
  30. 114
  31. 100
  32. 76
  33. 95
  34. 126
  35. 84
  36. 159
  37. 108
  38. 66
  39. 149
  40. 40

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