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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 848 · 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 + 49 =
  2. 2.68 + 19 =
  3. 3.36 + 54 =
  4. 4.35 + 48 =
  5. 5.75 + 18 =
  6. 6.62 + 32 =
  7. 7.58 + 75 =
  8. 8.47 + 71 =
  9. 9.86 + 67 =
  10. 10.41 + 74 =
  11. 11.21 + 45 =
  12. 12.86 + 12 =
  13. 13.53 + 48 =
  14. 14.84 + 52 =
  15. 15.22 + 22 =
  16. 16.27 + 55 =
  17. 17.45 + 61 =
  18. 18.44 + 56 =
  19. 19.79 + 86 =
  20. 20.29 + 74 =
  21. 21.76 + 56 =
  22. 22.23 + 55 =
  23. 23.69 + 88 =
  24. 24.65 + 37 =
  25. 25.43 + 51 =
  26. 26.86 + 48 =
  27. 27.55 + 43 =
  28. 28.78 + 41 =
  29. 29.42 + 81 =
  30. 30.39 + 76 =
  31. 31.57 + 57 =
  32. 32.87 + 57 =
  33. 33.62 + 88 =
  34. 34.37 + 31 =
  35. 35.31 + 58 =
  36. 36.33 + 44 =
  37. 37.36 + 41 =
  38. 38.31 + 71 =
  39. 39.59 + 66 =
  40. 40.32 + 65 =

Answer key

  1. 93
  2. 87
  3. 90
  4. 83
  5. 93
  6. 94
  7. 133
  8. 118
  9. 153
  10. 115
  11. 66
  12. 98
  13. 101
  14. 136
  15. 44
  16. 82
  17. 106
  18. 100
  19. 165
  20. 103
  21. 132
  22. 78
  23. 157
  24. 102
  25. 94
  26. 134
  27. 98
  28. 119
  29. 123
  30. 115
  31. 114
  32. 144
  33. 150
  34. 68
  35. 89
  36. 77
  37. 77
  38. 102
  39. 125
  40. 97

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