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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 858 · 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 20 × 16 =
  2. 2.Digital root of 59 × 53 =
  3. 3.Digital root of 64 × 91 =
  4. 4.Digital root of 36184 =
  5. 5.Digital root of 58 × 72 =
  6. 6.Digital root of 2174 =
  7. 7.Digital root of 4751 =
  8. 8.Digital root of 46453 =
  9. 9.Digital root of 44001 =
  10. 10.Digital root of 79423 =
  11. 11.Digital root of 89 × 75 =
  12. 12.Digital root of 89881 =
  13. 13.Digital root of 91 × 18 =
  14. 14.Digital root of 12 × 12 =
  15. 15.Digital root of 83 × 44 =
  16. 16.Digital root of 91514 =
  17. 17.Digital root of 1867 =
  18. 18.Digital root of 89 × 87 =
  19. 19.Digital root of 70295 =
  20. 20.Digital root of 89 × 81 =
  21. 21.Digital root of 67803 =
  22. 22.Digital root of 87876 =
  23. 23.Digital root of 29 × 41 =
  24. 24.Digital root of 46 × 26 =
  25. 25.Digital root of 87634 =
  26. 26.Digital root of 53 × 22 =
  27. 27.Digital root of 95 × 15 =
  28. 28.Digital root of 51 × 36 =
  29. 29.Digital root of 3757 =
  30. 30.Digital root of 1103 =
  31. 31.Digital root of 53474 =
  32. 32.Digital root of 19 × 99 =
  33. 33.Digital root of 24476 =
  34. 34.Digital root of 43 × 77 =
  35. 35.Digital root of 32498 =
  36. 36.Digital root of 56 × 43 =
  37. 37.Digital root of 87576 =
  38. 38.Digital root of 64 × 61 =
  39. 39.Digital root of 93 × 23 =
  40. 40.Digital root of 35059 =

Answer key

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

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