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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 464 · 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. 1.48 + 19 =
  2. 2.38 + 79 =
  3. 3.22 + 18 =
  4. 4.55 + 36 =
  5. 5.83 + 25 =
  6. 6.37 + 35 =
  7. 7.38 + 77 =
  8. 8.22 + 14 =
  9. 9.26 + 74 =
  10. 10.87 + 19 =
  11. 11.85 + 55 =
  12. 12.32 + 37 =
  13. 13.79 + 47 =
  14. 14.29 + 55 =
  15. 15.52 + 19 =
  16. 16.29 + 42 =
  17. 17.36 + 55 =
  18. 18.45 + 86 =
  19. 19.47 + 72 =
  20. 20.51 + 53 =
  21. 21.83 + 47 =
  22. 22.28 + 73 =
  23. 23.59 + 41 =
  24. 24.58 + 19 =
  25. 25.49 + 77 =
  26. 26.49 + 74 =
  27. 27.81 + 69 =
  28. 28.28 + 71 =
  29. 29.40 + 22 =
  30. 30.78 + 23 =
  31. 31.49 + 79 =
  32. 32.36 + 81 =
  33. 33.22 + 27 =
  34. 34.86 + 47 =
  35. 35.56 + 18 =
  36. 36.72 + 71 =
  37. 37.76 + 74 =
  38. 38.65 + 76 =
  39. 39.36 + 21 =
  40. 40.83 + 63 =

Answer key

  1. 67
  2. 117
  3. 40
  4. 91
  5. 108
  6. 72
  7. 115
  8. 36
  9. 100
  10. 106
  11. 140
  12. 69
  13. 126
  14. 84
  15. 71
  16. 71
  17. 91
  18. 131
  19. 119
  20. 104
  21. 130
  22. 101
  23. 100
  24. 77
  25. 126
  26. 123
  27. 150
  28. 99
  29. 62
  30. 101
  31. 128
  32. 117
  33. 49
  34. 133
  35. 74
  36. 143
  37. 150
  38. 141
  39. 57
  40. 146

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