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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 892 · 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. 1.68 + 56 =
  2. 2.36 + 65 =
  3. 3.85 + 77 =
  4. 4.56 + 63 =
  5. 5.66 + 28 =
  6. 6.21 + 13 =
  7. 7.76 + 38 =
  8. 8.40 + 25 =
  9. 9.41 + 35 =
  10. 10.75 + 68 =
  11. 11.40 + 51 =
  12. 12.40 + 87 =
  13. 13.24 + 58 =
  14. 14.35 + 34 =
  15. 15.77 + 86 =
  16. 16.62 + 75 =
  17. 17.45 + 31 =
  18. 18.71 + 41 =
  19. 19.25 + 68 =
  20. 20.80 + 44 =
  21. 21.76 + 41 =
  22. 22.70 + 81 =
  23. 23.79 + 81 =
  24. 24.30 + 61 =
  25. 25.62 + 86 =
  26. 26.84 + 15 =
  27. 27.53 + 46 =
  28. 28.74 + 49 =
  29. 29.70 + 41 =
  30. 30.29 + 25 =
  31. 31.88 + 35 =
  32. 32.47 + 69 =
  33. 33.66 + 42 =
  34. 34.26 + 24 =
  35. 35.84 + 14 =
  36. 36.27 + 21 =
  37. 37.67 + 43 =
  38. 38.70 + 47 =
  39. 39.21 + 38 =
  40. 40.75 + 33 =

Answer key

  1. 124
  2. 101
  3. 162
  4. 119
  5. 94
  6. 34
  7. 114
  8. 65
  9. 76
  10. 143
  11. 91
  12. 127
  13. 82
  14. 69
  15. 163
  16. 137
  17. 76
  18. 112
  19. 93
  20. 124
  21. 117
  22. 151
  23. 160
  24. 91
  25. 148
  26. 99
  27. 99
  28. 123
  29. 111
  30. 54
  31. 123
  32. 116
  33. 108
  34. 50
  35. 98
  36. 48
  37. 110
  38. 117
  39. 59
  40. 108

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