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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 916 · 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. 1.62 + 26 =
  2. 2.34 + 53 =
  3. 3.89 + 34 =
  4. 4.23 + 23 =
  5. 5.40 + 75 =
  6. 6.43 + 73 =
  7. 7.78 + 75 =
  8. 8.35 + 65 =
  9. 9.51 + 65 =
  10. 10.61 + 49 =
  11. 11.27 + 66 =
  12. 12.63 + 44 =
  13. 13.56 + 61 =
  14. 14.66 + 54 =
  15. 15.43 + 62 =
  16. 16.82 + 47 =
  17. 17.84 + 57 =
  18. 18.84 + 54 =
  19. 19.47 + 88 =
  20. 20.60 + 61 =
  21. 21.63 + 51 =
  22. 22.34 + 51 =
  23. 23.41 + 71 =
  24. 24.32 + 18 =
  25. 25.81 + 57 =
  26. 26.64 + 29 =
  27. 27.82 + 44 =
  28. 28.77 + 79 =
  29. 29.49 + 19 =
  30. 30.75 + 42 =
  31. 31.59 + 78 =
  32. 32.73 + 73 =
  33. 33.53 + 76 =
  34. 34.80 + 41 =
  35. 35.21 + 52 =
  36. 36.69 + 55 =
  37. 37.29 + 63 =
  38. 38.69 + 59 =
  39. 39.76 + 36 =
  40. 40.21 + 77 =

Answer key

  1. 88
  2. 87
  3. 123
  4. 46
  5. 115
  6. 116
  7. 153
  8. 100
  9. 116
  10. 110
  11. 93
  12. 107
  13. 117
  14. 120
  15. 105
  16. 129
  17. 141
  18. 138
  19. 135
  20. 121
  21. 114
  22. 85
  23. 112
  24. 50
  25. 138
  26. 93
  27. 126
  28. 156
  29. 68
  30. 117
  31. 137
  32. 146
  33. 129
  34. 121
  35. 73
  36. 124
  37. 92
  38. 128
  39. 112
  40. 98

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