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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 646 · 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 70000 =
  2. 2.Digital root of 74316 =
  3. 3.Digital root of 71947 =
  4. 4.Digital root of 32 × 88 =
  5. 5.Digital root of 80 × 61 =
  6. 6.Digital root of 99 × 65 =
  7. 7.Digital root of 96765 =
  8. 8.Digital root of 67288 =
  9. 9.Digital root of 60349 =
  10. 10.Digital root of 95 × 99 =
  11. 11.Digital root of 60 × 96 =
  12. 12.Digital root of 31535 =
  13. 13.Digital root of 91 × 37 =
  14. 14.Digital root of 40088 =
  15. 15.Digital root of 41881 =
  16. 16.Digital root of 39260 =
  17. 17.Digital root of 41621 =
  18. 18.Digital root of 48043 =
  19. 19.Digital root of 77 × 42 =
  20. 20.Digital root of 28973 =
  21. 21.Digital root of 50485 =
  22. 22.Digital root of 98624 =
  23. 23.Digital root of 91812 =
  24. 24.Digital root of 78658 =
  25. 25.Digital root of 49983 =
  26. 26.Digital root of 25955 =
  27. 27.Digital root of 46 × 61 =
  28. 28.Digital root of 39838 =
  29. 29.Digital root of 90155 =
  30. 30.Digital root of 65 × 96 =
  31. 31.Digital root of 73928 =
  32. 32.Digital root of 60 × 73 =
  33. 33.Digital root of 31 × 25 =
  34. 34.Digital root of 86383 =
  35. 35.Digital root of 42 × 36 =
  36. 36.Digital root of 19097 =
  37. 37.Digital root of 58359 =
  38. 38.Digital root of 61280 =
  39. 39.Digital root of 34445 =
  40. 40.Digital root of 61277 =

Answer key

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

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