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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 471 · 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 92 × 44 =
  2. 2.Digital root of 30 × 52 =
  3. 3.Digital root of 23894 =
  4. 4.Digital root of 62769 =
  5. 5.Digital root of 80027 =
  6. 6.Digital root of 44484 =
  7. 7.Digital root of 3212 =
  8. 8.Digital root of 18 × 88 =
  9. 9.Digital root of 6365 =
  10. 10.Digital root of 52748 =
  11. 11.Digital root of 32554 =
  12. 12.Digital root of 89748 =
  13. 13.Digital root of 15771 =
  14. 14.Digital root of 90291 =
  15. 15.Digital root of 78 × 88 =
  16. 16.Digital root of 24619 =
  17. 17.Digital root of 47 × 17 =
  18. 18.Digital root of 26728 =
  19. 19.Digital root of 26 × 70 =
  20. 20.Digital root of 89 × 28 =
  21. 21.Digital root of 33 × 51 =
  22. 22.Digital root of 53 × 44 =
  23. 23.Digital root of 31308 =
  24. 24.Digital root of 49757 =
  25. 25.Digital root of 96059 =
  26. 26.Digital root of 49502 =
  27. 27.Digital root of 73584 =
  28. 28.Digital root of 95 × 68 =
  29. 29.Digital root of 99 × 84 =
  30. 30.Digital root of 40 × 21 =
  31. 31.Digital root of 13601 =
  32. 32.Digital root of 97707 =
  33. 33.Digital root of 21 × 90 =
  34. 34.Digital root of 67 × 37 =
  35. 35.Digital root of 5558 =
  36. 36.Digital root of 23 × 13 =
  37. 37.Digital root of 13 × 15 =
  38. 38.Digital root of 18 × 55 =
  39. 39.Digital root of 61 × 47 =
  40. 40.Digital root of 85 × 98 =

Answer key

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

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