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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 730 · 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. 1.41 + 44 =
  2. 2.78 + 85 =
  3. 3.68 + 89 =
  4. 4.70 + 44 =
  5. 5.76 + 51 =
  6. 6.86 + 56 =
  7. 7.58 + 85 =
  8. 8.38 + 41 =
  9. 9.89 + 62 =
  10. 10.56 + 89 =
  11. 11.61 + 68 =
  12. 12.67 + 58 =
  13. 13.61 + 32 =
  14. 14.69 + 65 =
  15. 15.65 + 51 =
  16. 16.41 + 86 =
  17. 17.36 + 76 =
  18. 18.68 + 51 =
  19. 19.62 + 25 =
  20. 20.23 + 18 =
  21. 21.63 + 35 =
  22. 22.49 + 44 =
  23. 23.34 + 18 =
  24. 24.35 + 85 =
  25. 25.60 + 29 =
  26. 26.65 + 35 =
  27. 27.41 + 68 =
  28. 28.38 + 73 =
  29. 29.77 + 19 =
  30. 30.49 + 45 =
  31. 31.63 + 21 =
  32. 32.72 + 67 =
  33. 33.46 + 67 =
  34. 34.67 + 66 =
  35. 35.66 + 73 =
  36. 36.68 + 79 =
  37. 37.78 + 62 =
  38. 38.45 + 46 =
  39. 39.74 + 82 =
  40. 40.87 + 53 =

Answer key

  1. 85
  2. 163
  3. 157
  4. 114
  5. 127
  6. 142
  7. 143
  8. 79
  9. 151
  10. 145
  11. 129
  12. 125
  13. 93
  14. 134
  15. 116
  16. 127
  17. 112
  18. 119
  19. 87
  20. 41
  21. 98
  22. 93
  23. 52
  24. 120
  25. 89
  26. 100
  27. 109
  28. 111
  29. 96
  30. 94
  31. 84
  32. 139
  33. 113
  34. 133
  35. 139
  36. 147
  37. 140
  38. 91
  39. 156
  40. 140

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