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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 778 · 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 99924 =
  2. 2.Digital root of 47699 =
  3. 3.Digital root of 89 × 13 =
  4. 4.Digital root of 81680 =
  5. 5.Digital root of 80796 =
  6. 6.Digital root of 45 × 75 =
  7. 7.Digital root of 23 × 28 =
  8. 8.Digital root of 15679 =
  9. 9.Digital root of 70 × 76 =
  10. 10.Digital root of 50712 =
  11. 11.Digital root of 51983 =
  12. 12.Digital root of 51658 =
  13. 13.Digital root of 10382 =
  14. 14.Digital root of 61497 =
  15. 15.Digital root of 73 × 79 =
  16. 16.Digital root of 13310 =
  17. 17.Digital root of 16 × 84 =
  18. 18.Digital root of 14210 =
  19. 19.Digital root of 43384 =
  20. 20.Digital root of 58 × 87 =
  21. 21.Digital root of 38869 =
  22. 22.Digital root of 33 × 78 =
  23. 23.Digital root of 99 × 65 =
  24. 24.Digital root of 45 × 44 =
  25. 25.Digital root of 40 × 95 =
  26. 26.Digital root of 56 × 41 =
  27. 27.Digital root of 76 × 39 =
  28. 28.Digital root of 49 × 59 =
  29. 29.Digital root of 99 × 51 =
  30. 30.Digital root of 44 × 80 =
  31. 31.Digital root of 58163 =
  32. 32.Digital root of 44789 =
  33. 33.Digital root of 32377 =
  34. 34.Digital root of 70554 =
  35. 35.Digital root of 60861 =
  36. 36.Digital root of 38128 =
  37. 37.Digital root of 45 × 36 =
  38. 38.Digital root of 12 × 24 =
  39. 39.Digital root of 28361 =
  40. 40.Digital root of 27 × 74 =

Answer key

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

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