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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 896 · 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. 1.32 + 71 =
  2. 2.54 + 62 =
  3. 3.73 + 21 =
  4. 4.37 + 18 =
  5. 5.29 + 79 =
  6. 6.63 + 41 =
  7. 7.32 + 35 =
  8. 8.49 + 81 =
  9. 9.32 + 23 =
  10. 10.59 + 75 =
  11. 11.39 + 54 =
  12. 12.72 + 51 =
  13. 13.44 + 71 =
  14. 14.84 + 74 =
  15. 15.22 + 88 =
  16. 16.43 + 67 =
  17. 17.25 + 19 =
  18. 18.61 + 43 =
  19. 19.67 + 24 =
  20. 20.60 + 47 =
  21. 21.87 + 62 =
  22. 22.72 + 83 =
  23. 23.60 + 17 =
  24. 24.34 + 25 =
  25. 25.28 + 83 =
  26. 26.41 + 17 =
  27. 27.73 + 38 =
  28. 28.38 + 12 =
  29. 29.55 + 42 =
  30. 30.26 + 62 =
  31. 31.71 + 52 =
  32. 32.60 + 83 =
  33. 33.42 + 84 =
  34. 34.24 + 14 =
  35. 35.84 + 68 =
  36. 36.79 + 86 =
  37. 37.83 + 59 =
  38. 38.83 + 33 =
  39. 39.48 + 46 =
  40. 40.79 + 14 =

Answer key

  1. 103
  2. 116
  3. 94
  4. 55
  5. 108
  6. 104
  7. 67
  8. 130
  9. 55
  10. 134
  11. 93
  12. 123
  13. 115
  14. 158
  15. 110
  16. 110
  17. 44
  18. 104
  19. 91
  20. 107
  21. 149
  22. 155
  23. 77
  24. 59
  25. 111
  26. 58
  27. 111
  28. 50
  29. 97
  30. 88
  31. 123
  32. 143
  33. 126
  34. 38
  35. 152
  36. 165
  37. 142
  38. 116
  39. 94
  40. 93

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