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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 349 · 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 80 × 53 =
  2. 2.Digital root of 64538 =
  3. 3.Digital root of 94413 =
  4. 4.Digital root of 59 × 61 =
  5. 5.Digital root of 90595 =
  6. 6.Digital root of 64090 =
  7. 7.Digital root of 50 × 25 =
  8. 8.Digital root of 31482 =
  9. 9.Digital root of 29808 =
  10. 10.Digital root of 53683 =
  11. 11.Digital root of 96242 =
  12. 12.Digital root of 24 × 18 =
  13. 13.Digital root of 73 × 87 =
  14. 14.Digital root of 97 × 71 =
  15. 15.Digital root of 84538 =
  16. 16.Digital root of 81 × 50 =
  17. 17.Digital root of 35466 =
  18. 18.Digital root of 51 × 48 =
  19. 19.Digital root of 50246 =
  20. 20.Digital root of 81 × 29 =
  21. 21.Digital root of 59858 =
  22. 22.Digital root of 12567 =
  23. 23.Digital root of 70009 =
  24. 24.Digital root of 92785 =
  25. 25.Digital root of 79946 =
  26. 26.Digital root of 26213 =
  27. 27.Digital root of 20 × 16 =
  28. 28.Digital root of 28344 =
  29. 29.Digital root of 70557 =
  30. 30.Digital root of 282 =
  31. 31.Digital root of 75717 =
  32. 32.Digital root of 15068 =
  33. 33.Digital root of 21 × 93 =
  34. 34.Digital root of 8581 =
  35. 35.Digital root of 53 × 18 =
  36. 36.Digital root of 30535 =
  37. 37.Digital root of 91 × 18 =
  38. 38.Digital root of 34821 =
  39. 39.Digital root of 51360 =
  40. 40.Digital root of 42 × 80 =

Answer key

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

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