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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 918 · 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 61659 =
  2. 2.Digital root of 864 =
  3. 3.Digital root of 30 × 72 =
  4. 4.Digital root of 30 × 20 =
  5. 5.Digital root of 26859 =
  6. 6.Digital root of 44 × 85 =
  7. 7.Digital root of 66 × 69 =
  8. 8.Digital root of 91 × 21 =
  9. 9.Digital root of 83946 =
  10. 10.Digital root of 61 × 54 =
  11. 11.Digital root of 1373 =
  12. 12.Digital root of 23 × 50 =
  13. 13.Digital root of 60 × 41 =
  14. 14.Digital root of 87 × 78 =
  15. 15.Digital root of 64 × 52 =
  16. 16.Digital root of 21915 =
  17. 17.Digital root of 17485 =
  18. 18.Digital root of 29023 =
  19. 19.Digital root of 52 × 42 =
  20. 20.Digital root of 65 × 94 =
  21. 21.Digital root of 78 × 63 =
  22. 22.Digital root of 56420 =
  23. 23.Digital root of 11395 =
  24. 24.Digital root of 21 × 41 =
  25. 25.Digital root of 12964 =
  26. 26.Digital root of 73672 =
  27. 27.Digital root of 55 × 54 =
  28. 28.Digital root of 24 × 71 =
  29. 29.Digital root of 171 =
  30. 30.Digital root of 51650 =
  31. 31.Digital root of 16 × 99 =
  32. 32.Digital root of 29 × 27 =
  33. 33.Digital root of 47 × 64 =
  34. 34.Digital root of 9847 =
  35. 35.Digital root of 40518 =
  36. 36.Digital root of 46015 =
  37. 37.Digital root of 42560 =
  38. 38.Digital root of 68 × 52 =
  39. 39.Digital root of 81793 =
  40. 40.Digital root of 88020 =

Answer key

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

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