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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 673 · 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 98602 =
  2. 2.Digital root of 26 × 17 =
  3. 3.Digital root of 76 × 54 =
  4. 4.Digital root of 6561 =
  5. 5.Digital root of 37843 =
  6. 6.Digital root of 57109 =
  7. 7.Digital root of 63816 =
  8. 8.Digital root of 36 × 39 =
  9. 9.Digital root of 57 × 53 =
  10. 10.Digital root of 81655 =
  11. 11.Digital root of 63 × 41 =
  12. 12.Digital root of 79043 =
  13. 13.Digital root of 24347 =
  14. 14.Digital root of 74914 =
  15. 15.Digital root of 46 × 13 =
  16. 16.Digital root of 46 × 39 =
  17. 17.Digital root of 23 × 69 =
  18. 18.Digital root of 11668 =
  19. 19.Digital root of 90148 =
  20. 20.Digital root of 52072 =
  21. 21.Digital root of 3173 =
  22. 22.Digital root of 99903 =
  23. 23.Digital root of 57605 =
  24. 24.Digital root of 29 × 28 =
  25. 25.Digital root of 47 × 31 =
  26. 26.Digital root of 27 × 86 =
  27. 27.Digital root of 50 × 44 =
  28. 28.Digital root of 12324 =
  29. 29.Digital root of 93553 =
  30. 30.Digital root of 51 × 18 =
  31. 31.Digital root of 35184 =
  32. 32.Digital root of 31 × 12 =
  33. 33.Digital root of 16463 =
  34. 34.Digital root of 1385 =
  35. 35.Digital root of 73488 =
  36. 36.Digital root of 77190 =
  37. 37.Digital root of 35 × 36 =
  38. 38.Digital root of 97 × 50 =
  39. 39.Digital root of 95 × 73 =
  40. 40.Digital root of 1999 =

Answer key

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

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