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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 794 · 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 + 63 =
  2. 2.26 + 43 =
  3. 3.84 + 55 =
  4. 4.22 + 14 =
  5. 5.25 + 66 =
  6. 6.31 + 17 =
  7. 7.40 + 71 =
  8. 8.45 + 13 =
  9. 9.67 + 88 =
  10. 10.71 + 79 =
  11. 11.72 + 84 =
  12. 12.61 + 79 =
  13. 13.48 + 25 =
  14. 14.75 + 39 =
  15. 15.54 + 13 =
  16. 16.79 + 26 =
  17. 17.37 + 27 =
  18. 18.76 + 24 =
  19. 19.40 + 34 =
  20. 20.49 + 76 =
  21. 21.29 + 33 =
  22. 22.78 + 23 =
  23. 23.67 + 34 =
  24. 24.36 + 54 =
  25. 25.68 + 63 =
  26. 26.26 + 25 =
  27. 27.63 + 34 =
  28. 28.84 + 54 =
  29. 29.21 + 51 =
  30. 30.73 + 12 =
  31. 31.76 + 43 =
  32. 32.51 + 47 =
  33. 33.52 + 32 =
  34. 34.80 + 32 =
  35. 35.78 + 38 =
  36. 36.83 + 61 =
  37. 37.21 + 43 =
  38. 38.31 + 24 =
  39. 39.43 + 78 =
  40. 40.53 + 65 =

Answer key

  1. 95
  2. 69
  3. 139
  4. 36
  5. 91
  6. 48
  7. 111
  8. 58
  9. 155
  10. 150
  11. 156
  12. 140
  13. 73
  14. 114
  15. 67
  16. 105
  17. 64
  18. 100
  19. 74
  20. 125
  21. 62
  22. 101
  23. 101
  24. 90
  25. 131
  26. 51
  27. 97
  28. 138
  29. 72
  30. 85
  31. 119
  32. 98
  33. 84
  34. 112
  35. 116
  36. 144
  37. 64
  38. 55
  39. 121
  40. 118

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