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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 479 · 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 51090 =
  2. 2.Digital root of 2405 =
  3. 3.Digital root of 28643 =
  4. 4.Digital root of 79038 =
  5. 5.Digital root of 99882 =
  6. 6.Digital root of 79757 =
  7. 7.Digital root of 56 × 32 =
  8. 8.Digital root of 40127 =
  9. 9.Digital root of 75 × 68 =
  10. 10.Digital root of 33 × 87 =
  11. 11.Digital root of 70712 =
  12. 12.Digital root of 60 × 64 =
  13. 13.Digital root of 41 × 45 =
  14. 14.Digital root of 56089 =
  15. 15.Digital root of 15 × 84 =
  16. 16.Digital root of 67 × 73 =
  17. 17.Digital root of 60 × 88 =
  18. 18.Digital root of 48877 =
  19. 19.Digital root of 54 × 84 =
  20. 20.Digital root of 57201 =
  21. 21.Digital root of 42 × 79 =
  22. 22.Digital root of 17706 =
  23. 23.Digital root of 49812 =
  24. 24.Digital root of 24 × 34 =
  25. 25.Digital root of 19 × 72 =
  26. 26.Digital root of 41 × 66 =
  27. 27.Digital root of 9649 =
  28. 28.Digital root of 95 × 25 =
  29. 29.Digital root of 58565 =
  30. 30.Digital root of 77 × 71 =
  31. 31.Digital root of 21018 =
  32. 32.Digital root of 42 × 33 =
  33. 33.Digital root of 51872 =
  34. 34.Digital root of 32 × 63 =
  35. 35.Digital root of 91311 =
  36. 36.Digital root of 33868 =
  37. 37.Digital root of 87505 =
  38. 38.Digital root of 28485 =
  39. 39.Digital root of 88492 =
  40. 40.Digital root of 22605 =

Answer key

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

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