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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 597 · 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 44174 =
  2. 2.Digital root of 38 × 21 =
  3. 3.Digital root of 87042 =
  4. 4.Digital root of 55 × 66 =
  5. 5.Digital root of 44 × 55 =
  6. 6.Digital root of 30457 =
  7. 7.Digital root of 55 × 86 =
  8. 8.Digital root of 72083 =
  9. 9.Digital root of 31730 =
  10. 10.Digital root of 3220 =
  11. 11.Digital root of 17420 =
  12. 12.Digital root of 75129 =
  13. 13.Digital root of 18952 =
  14. 14.Digital root of 19 × 38 =
  15. 15.Digital root of 16614 =
  16. 16.Digital root of 85405 =
  17. 17.Digital root of 60 × 34 =
  18. 18.Digital root of 24559 =
  19. 19.Digital root of 33 × 95 =
  20. 20.Digital root of 54 × 28 =
  21. 21.Digital root of 85 × 92 =
  22. 22.Digital root of 30 × 19 =
  23. 23.Digital root of 14655 =
  24. 24.Digital root of 64 × 23 =
  25. 25.Digital root of 31746 =
  26. 26.Digital root of 52 × 67 =
  27. 27.Digital root of 27 × 96 =
  28. 28.Digital root of 21 × 48 =
  29. 29.Digital root of 40761 =
  30. 30.Digital root of 58321 =
  31. 31.Digital root of 25 × 25 =
  32. 32.Digital root of 95 × 44 =
  33. 33.Digital root of 56 × 34 =
  34. 34.Digital root of 11121 =
  35. 35.Digital root of 62907 =
  36. 36.Digital root of 88 × 91 =
  37. 37.Digital root of 15232 =
  38. 38.Digital root of 40737 =
  39. 39.Digital root of 35 × 49 =
  40. 40.Digital root of 24 × 70 =

Answer key

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

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