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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 372 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 32 × 14 =
  2. 2.Digital root of 27898 =
  3. 3.Digital root of 35 × 15 =
  4. 4.Digital root of 68203 =
  5. 5.Digital root of 11567 =
  6. 6.Digital root of 23297 =
  7. 7.Digital root of 74 × 88 =
  8. 8.Digital root of 84 × 21 =
  9. 9.Digital root of 21 × 14 =
  10. 10.Digital root of 15070 =
  11. 11.Digital root of 96549 =
  12. 12.Digital root of 46 × 86 =
  13. 13.Digital root of 17083 =
  14. 14.Digital root of 85 × 18 =
  15. 15.Digital root of 28358 =
  16. 16.Digital root of 94 × 50 =
  17. 17.Digital root of 36997 =
  18. 18.Digital root of 62 × 16 =
  19. 19.Digital root of 629 =
  20. 20.Digital root of 5768 =
  21. 21.Digital root of 99 × 78 =
  22. 22.Digital root of 52 × 27 =
  23. 23.Digital root of 28018 =
  24. 24.Digital root of 82 × 15 =
  25. 25.Digital root of 27581 =
  26. 26.Digital root of 99 × 53 =
  27. 27.Digital root of 54 × 75 =
  28. 28.Digital root of 34360 =
  29. 29.Digital root of 33660 =
  30. 30.Digital root of 42 × 35 =
  31. 31.Digital root of 5271 =
  32. 32.Digital root of 16352 =
  33. 33.Digital root of 6806 =
  34. 34.Digital root of 69 × 68 =
  35. 35.Digital root of 9763 =
  36. 36.Digital root of 6422 =
  37. 37.Digital root of 80032 =
  38. 38.Digital root of 82168 =
  39. 39.Digital root of 22971 =
  40. 40.Digital root of 97 × 92 =

Answer key

  1. 7
  2. 7
  3. 3
  4. 1
  5. 2
  6. 5
  7. 5
  8. 9
  9. 6
  10. 4
  11. 6
  12. 5
  13. 1
  14. 9
  15. 8
  16. 2
  17. 7
  18. 2
  19. 8
  20. 8
  21. 9
  22. 9
  23. 1
  24. 6
  25. 5
  26. 9
  27. 9
  28. 7
  29. 9
  30. 3
  31. 6
  32. 8
  33. 2
  34. 3
  35. 7
  36. 5
  37. 4
  38. 7
  39. 3
  40. 5

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