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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 4 · 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 96351 =
  2. 2.Digital root of 14644 =
  3. 3.Digital root of 7428 =
  4. 4.Digital root of 35 × 17 =
  5. 5.Digital root of 11855 =
  6. 6.Digital root of 24739 =
  7. 7.Digital root of 85256 =
  8. 8.Digital root of 1570 =
  9. 9.Digital root of 97212 =
  10. 10.Digital root of 15874 =
  11. 11.Digital root of 93126 =
  12. 12.Digital root of 79 × 92 =
  13. 13.Digital root of 19 × 15 =
  14. 14.Digital root of 22739 =
  15. 15.Digital root of 99 × 45 =
  16. 16.Digital root of 96 × 14 =
  17. 17.Digital root of 86 × 51 =
  18. 18.Digital root of 63 × 12 =
  19. 19.Digital root of 37 × 40 =
  20. 20.Digital root of 81 × 96 =
  21. 21.Digital root of 59 × 99 =
  22. 22.Digital root of 64180 =
  23. 23.Digital root of 85 × 40 =
  24. 24.Digital root of 8023 =
  25. 25.Digital root of 64 × 16 =
  26. 26.Digital root of 75439 =
  27. 27.Digital root of 52303 =
  28. 28.Digital root of 56307 =
  29. 29.Digital root of 51 × 20 =
  30. 30.Digital root of 16819 =
  31. 31.Digital root of 51 × 20 =
  32. 32.Digital root of 88 × 31 =
  33. 33.Digital root of 70666 =
  34. 34.Digital root of 40 × 38 =
  35. 35.Digital root of 26 × 47 =
  36. 36.Digital root of 72107 =
  37. 37.Digital root of 43149 =
  38. 38.Digital root of 56 × 88 =
  39. 39.Digital root of 28784 =
  40. 40.Digital root of 792 =

Answer key

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

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