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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 739 · 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. 1.50 + 37 =
  2. 2.40 + 52 =
  3. 3.57 + 37 =
  4. 4.30 + 24 =
  5. 5.36 + 65 =
  6. 6.79 + 59 =
  7. 7.85 + 33 =
  8. 8.37 + 88 =
  9. 9.40 + 19 =
  10. 10.35 + 85 =
  11. 11.77 + 22 =
  12. 12.65 + 13 =
  13. 13.36 + 21 =
  14. 14.35 + 32 =
  15. 15.75 + 73 =
  16. 16.84 + 78 =
  17. 17.34 + 18 =
  18. 18.33 + 56 =
  19. 19.22 + 79 =
  20. 20.21 + 18 =
  21. 21.74 + 54 =
  22. 22.78 + 49 =
  23. 23.59 + 34 =
  24. 24.61 + 13 =
  25. 25.28 + 73 =
  26. 26.88 + 31 =
  27. 27.51 + 36 =
  28. 28.33 + 61 =
  29. 29.82 + 86 =
  30. 30.43 + 19 =
  31. 31.33 + 14 =
  32. 32.26 + 68 =
  33. 33.74 + 72 =
  34. 34.82 + 39 =
  35. 35.39 + 88 =
  36. 36.30 + 77 =
  37. 37.37 + 14 =
  38. 38.33 + 33 =
  39. 39.23 + 69 =
  40. 40.88 + 35 =

Answer key

  1. 87
  2. 92
  3. 94
  4. 54
  5. 101
  6. 138
  7. 118
  8. 125
  9. 59
  10. 120
  11. 99
  12. 78
  13. 57
  14. 67
  15. 148
  16. 162
  17. 52
  18. 89
  19. 101
  20. 39
  21. 128
  22. 127
  23. 93
  24. 74
  25. 101
  26. 119
  27. 87
  28. 94
  29. 168
  30. 62
  31. 47
  32. 94
  33. 146
  34. 121
  35. 127
  36. 107
  37. 51
  38. 66
  39. 92
  40. 123

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