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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 438 · 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 78588 =
  2. 2.Digital root of 58333 =
  3. 3.Digital root of 71 × 34 =
  4. 4.Digital root of 23 × 19 =
  5. 5.Digital root of 16 × 99 =
  6. 6.Digital root of 79621 =
  7. 7.Digital root of 53374 =
  8. 8.Digital root of 70545 =
  9. 9.Digital root of 72 × 72 =
  10. 10.Digital root of 77277 =
  11. 11.Digital root of 62455 =
  12. 12.Digital root of 93340 =
  13. 13.Digital root of 70045 =
  14. 14.Digital root of 3502 =
  15. 15.Digital root of 57529 =
  16. 16.Digital root of 28202 =
  17. 17.Digital root of 2335 =
  18. 18.Digital root of 94 × 20 =
  19. 19.Digital root of 87 × 60 =
  20. 20.Digital root of 785 =
  21. 21.Digital root of 5416 =
  22. 22.Digital root of 7022 =
  23. 23.Digital root of 20 × 18 =
  24. 24.Digital root of 62 × 42 =
  25. 25.Digital root of 53670 =
  26. 26.Digital root of 81190 =
  27. 27.Digital root of 92112 =
  28. 28.Digital root of 25711 =
  29. 29.Digital root of 41 × 63 =
  30. 30.Digital root of 98181 =
  31. 31.Digital root of 3221 =
  32. 32.Digital root of 24 × 39 =
  33. 33.Digital root of 28027 =
  34. 34.Digital root of 63891 =
  35. 35.Digital root of 42 × 82 =
  36. 36.Digital root of 99 × 19 =
  37. 37.Digital root of 19265 =
  38. 38.Digital root of 39610 =
  39. 39.Digital root of 85528 =
  40. 40.Digital root of 95 × 86 =

Answer key

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

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