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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 823 · 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 95 × 71 =
  2. 2.Digital root of 47 × 28 =
  3. 3.Digital root of 63424 =
  4. 4.Digital root of 35099 =
  5. 5.Digital root of 80 × 34 =
  6. 6.Digital root of 74 × 68 =
  7. 7.Digital root of 7868 =
  8. 8.Digital root of 36 × 12 =
  9. 9.Digital root of 28 × 27 =
  10. 10.Digital root of 52551 =
  11. 11.Digital root of 25 × 34 =
  12. 12.Digital root of 43249 =
  13. 13.Digital root of 212 =
  14. 14.Digital root of 24955 =
  15. 15.Digital root of 39419 =
  16. 16.Digital root of 45233 =
  17. 17.Digital root of 33 × 73 =
  18. 18.Digital root of 44427 =
  19. 19.Digital root of 47 × 74 =
  20. 20.Digital root of 19710 =
  21. 21.Digital root of 14 × 48 =
  22. 22.Digital root of 24 × 23 =
  23. 23.Digital root of 77 × 26 =
  24. 24.Digital root of 13 × 26 =
  25. 25.Digital root of 66 × 20 =
  26. 26.Digital root of 80830 =
  27. 27.Digital root of 15298 =
  28. 28.Digital root of 21292 =
  29. 29.Digital root of 14 × 16 =
  30. 30.Digital root of 59 × 25 =
  31. 31.Digital root of 71 × 48 =
  32. 32.Digital root of 83753 =
  33. 33.Digital root of 19 × 12 =
  34. 34.Digital root of 39122 =
  35. 35.Digital root of 63 × 15 =
  36. 36.Digital root of 43 × 87 =
  37. 37.Digital root of 88 × 85 =
  38. 38.Digital root of 46 × 81 =
  39. 39.Digital root of 81 × 17 =
  40. 40.Digital root of 40 × 28 =

Answer key

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

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