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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 852 · 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. 1.80 + 37 =
  2. 2.21 + 31 =
  3. 3.87 + 54 =
  4. 4.25 + 57 =
  5. 5.26 + 65 =
  6. 6.50 + 64 =
  7. 7.84 + 27 =
  8. 8.58 + 46 =
  9. 9.29 + 29 =
  10. 10.36 + 22 =
  11. 11.29 + 71 =
  12. 12.52 + 35 =
  13. 13.35 + 19 =
  14. 14.85 + 54 =
  15. 15.77 + 72 =
  16. 16.71 + 21 =
  17. 17.53 + 87 =
  18. 18.25 + 46 =
  19. 19.88 + 46 =
  20. 20.46 + 13 =
  21. 21.86 + 86 =
  22. 22.74 + 74 =
  23. 23.50 + 21 =
  24. 24.40 + 53 =
  25. 25.27 + 46 =
  26. 26.29 + 51 =
  27. 27.61 + 67 =
  28. 28.39 + 78 =
  29. 29.52 + 87 =
  30. 30.35 + 24 =
  31. 31.26 + 12 =
  32. 32.57 + 25 =
  33. 33.67 + 48 =
  34. 34.35 + 33 =
  35. 35.34 + 42 =
  36. 36.35 + 61 =
  37. 37.59 + 17 =
  38. 38.60 + 28 =
  39. 39.57 + 32 =
  40. 40.32 + 86 =

Answer key

  1. 117
  2. 52
  3. 141
  4. 82
  5. 91
  6. 114
  7. 111
  8. 104
  9. 58
  10. 58
  11. 100
  12. 87
  13. 54
  14. 139
  15. 149
  16. 92
  17. 140
  18. 71
  19. 134
  20. 59
  21. 172
  22. 148
  23. 71
  24. 93
  25. 73
  26. 80
  27. 128
  28. 117
  29. 139
  30. 59
  31. 38
  32. 82
  33. 115
  34. 68
  35. 76
  36. 96
  37. 76
  38. 88
  39. 89
  40. 118

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