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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 962 · 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. 1.85 + 29 =
  2. 2.21 + 59 =
  3. 3.27 + 72 =
  4. 4.40 + 31 =
  5. 5.65 + 85 =
  6. 6.63 + 58 =
  7. 7.51 + 75 =
  8. 8.80 + 82 =
  9. 9.54 + 85 =
  10. 10.63 + 61 =
  11. 11.44 + 31 =
  12. 12.75 + 51 =
  13. 13.40 + 14 =
  14. 14.41 + 45 =
  15. 15.60 + 31 =
  16. 16.51 + 57 =
  17. 17.67 + 34 =
  18. 18.40 + 81 =
  19. 19.25 + 31 =
  20. 20.45 + 71 =
  21. 21.21 + 81 =
  22. 22.56 + 53 =
  23. 23.30 + 19 =
  24. 24.45 + 67 =
  25. 25.36 + 27 =
  26. 26.61 + 13 =
  27. 27.64 + 87 =
  28. 28.61 + 36 =
  29. 29.33 + 48 =
  30. 30.57 + 56 =
  31. 31.64 + 66 =
  32. 32.36 + 13 =
  33. 33.76 + 86 =
  34. 34.60 + 46 =
  35. 35.78 + 89 =
  36. 36.37 + 86 =
  37. 37.84 + 35 =
  38. 38.70 + 42 =
  39. 39.74 + 73 =
  40. 40.23 + 17 =

Answer key

  1. 114
  2. 80
  3. 99
  4. 71
  5. 150
  6. 121
  7. 126
  8. 162
  9. 139
  10. 124
  11. 75
  12. 126
  13. 54
  14. 86
  15. 91
  16. 108
  17. 101
  18. 121
  19. 56
  20. 116
  21. 102
  22. 109
  23. 49
  24. 112
  25. 63
  26. 74
  27. 151
  28. 97
  29. 81
  30. 113
  31. 130
  32. 49
  33. 162
  34. 106
  35. 167
  36. 123
  37. 119
  38. 112
  39. 147
  40. 40

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