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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 936 · 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. 1.44 + 47 =
  2. 2.52 + 16 =
  3. 3.88 + 34 =
  4. 4.75 + 89 =
  5. 5.50 + 83 =
  6. 6.43 + 26 =
  7. 7.37 + 35 =
  8. 8.81 + 25 =
  9. 9.65 + 78 =
  10. 10.46 + 71 =
  11. 11.63 + 19 =
  12. 12.33 + 21 =
  13. 13.64 + 21 =
  14. 14.40 + 61 =
  15. 15.71 + 33 =
  16. 16.27 + 24 =
  17. 17.88 + 32 =
  18. 18.44 + 27 =
  19. 19.25 + 61 =
  20. 20.46 + 81 =
  21. 21.68 + 63 =
  22. 22.61 + 57 =
  23. 23.87 + 51 =
  24. 24.74 + 34 =
  25. 25.75 + 16 =
  26. 26.71 + 88 =
  27. 27.24 + 86 =
  28. 28.84 + 52 =
  29. 29.58 + 48 =
  30. 30.47 + 21 =
  31. 31.22 + 58 =
  32. 32.49 + 64 =
  33. 33.67 + 13 =
  34. 34.40 + 81 =
  35. 35.88 + 21 =
  36. 36.84 + 65 =
  37. 37.89 + 61 =
  38. 38.89 + 46 =
  39. 39.33 + 41 =
  40. 40.73 + 58 =

Answer key

  1. 91
  2. 68
  3. 122
  4. 164
  5. 133
  6. 69
  7. 72
  8. 106
  9. 143
  10. 117
  11. 82
  12. 54
  13. 85
  14. 101
  15. 104
  16. 51
  17. 120
  18. 71
  19. 86
  20. 127
  21. 131
  22. 118
  23. 138
  24. 108
  25. 91
  26. 159
  27. 110
  28. 136
  29. 106
  30. 68
  31. 80
  32. 113
  33. 80
  34. 121
  35. 109
  36. 149
  37. 150
  38. 135
  39. 74
  40. 131

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