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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 928 · 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. 1.46 + 75 =
  2. 2.59 + 18 =
  3. 3.58 + 42 =
  4. 4.45 + 85 =
  5. 5.53 + 42 =
  6. 6.53 + 81 =
  7. 7.67 + 15 =
  8. 8.28 + 51 =
  9. 9.21 + 85 =
  10. 10.85 + 45 =
  11. 11.42 + 34 =
  12. 12.59 + 87 =
  13. 13.79 + 66 =
  14. 14.40 + 19 =
  15. 15.72 + 66 =
  16. 16.54 + 21 =
  17. 17.30 + 84 =
  18. 18.38 + 38 =
  19. 19.62 + 38 =
  20. 20.47 + 41 =
  21. 21.85 + 17 =
  22. 22.81 + 64 =
  23. 23.87 + 61 =
  24. 24.25 + 49 =
  25. 25.45 + 61 =
  26. 26.40 + 52 =
  27. 27.86 + 13 =
  28. 28.23 + 16 =
  29. 29.79 + 35 =
  30. 30.55 + 18 =
  31. 31.85 + 88 =
  32. 32.58 + 19 =
  33. 33.61 + 71 =
  34. 34.51 + 31 =
  35. 35.63 + 43 =
  36. 36.68 + 41 =
  37. 37.46 + 71 =
  38. 38.70 + 42 =
  39. 39.31 + 64 =
  40. 40.24 + 51 =

Answer key

  1. 121
  2. 77
  3. 100
  4. 130
  5. 95
  6. 134
  7. 82
  8. 79
  9. 106
  10. 130
  11. 76
  12. 146
  13. 145
  14. 59
  15. 138
  16. 75
  17. 114
  18. 76
  19. 100
  20. 88
  21. 102
  22. 145
  23. 148
  24. 74
  25. 106
  26. 92
  27. 99
  28. 39
  29. 114
  30. 73
  31. 173
  32. 77
  33. 132
  34. 82
  35. 106
  36. 109
  37. 117
  38. 112
  39. 95
  40. 75

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