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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 782 · 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 13186 =
  2. 2.Digital root of 48474 =
  3. 3.Digital root of 9717 =
  4. 4.Digital root of 94650 =
  5. 5.Digital root of 2417 =
  6. 6.Digital root of 25642 =
  7. 7.Digital root of 77330 =
  8. 8.Digital root of 83319 =
  9. 9.Digital root of 69970 =
  10. 10.Digital root of 65541 =
  11. 11.Digital root of 59179 =
  12. 12.Digital root of 87848 =
  13. 13.Digital root of 46935 =
  14. 14.Digital root of 63 × 33 =
  15. 15.Digital root of 64 × 86 =
  16. 16.Digital root of 398 =
  17. 17.Digital root of 81338 =
  18. 18.Digital root of 70 × 56 =
  19. 19.Digital root of 51 × 36 =
  20. 20.Digital root of 67 × 85 =
  21. 21.Digital root of 56 × 24 =
  22. 22.Digital root of 85 × 33 =
  23. 23.Digital root of 46 × 82 =
  24. 24.Digital root of 79383 =
  25. 25.Digital root of 69503 =
  26. 26.Digital root of 74 × 20 =
  27. 27.Digital root of 66 × 52 =
  28. 28.Digital root of 42532 =
  29. 29.Digital root of 6544 =
  30. 30.Digital root of 72430 =
  31. 31.Digital root of 36926 =
  32. 32.Digital root of 65825 =
  33. 33.Digital root of 17 × 81 =
  34. 34.Digital root of 34413 =
  35. 35.Digital root of 40 × 29 =
  36. 36.Digital root of 30266 =
  37. 37.Digital root of 13740 =
  38. 38.Digital root of 21 × 67 =
  39. 39.Digital root of 69619 =
  40. 40.Digital root of 31 × 91 =

Answer key

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

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