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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 677 · 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 74 × 34 =
  2. 2.Digital root of 59 × 85 =
  3. 3.Digital root of 67 × 69 =
  4. 4.Digital root of 69858 =
  5. 5.Digital root of 23 × 21 =
  6. 6.Digital root of 70 × 15 =
  7. 7.Digital root of 56 × 34 =
  8. 8.Digital root of 76 × 46 =
  9. 9.Digital root of 92 × 22 =
  10. 10.Digital root of 7573 =
  11. 11.Digital root of 67800 =
  12. 12.Digital root of 19 × 68 =
  13. 13.Digital root of 72 × 16 =
  14. 14.Digital root of 4069 =
  15. 15.Digital root of 88 × 82 =
  16. 16.Digital root of 75 × 97 =
  17. 17.Digital root of 77 × 24 =
  18. 18.Digital root of 61 × 23 =
  19. 19.Digital root of 93 × 12 =
  20. 20.Digital root of 6320 =
  21. 21.Digital root of 91 × 50 =
  22. 22.Digital root of 36 × 21 =
  23. 23.Digital root of 74 × 57 =
  24. 24.Digital root of 88 × 35 =
  25. 25.Digital root of 78 × 39 =
  26. 26.Digital root of 25 × 40 =
  27. 27.Digital root of 97558 =
  28. 28.Digital root of 61389 =
  29. 29.Digital root of 97466 =
  30. 30.Digital root of 39 × 27 =
  31. 31.Digital root of 17239 =
  32. 32.Digital root of 45320 =
  33. 33.Digital root of 51893 =
  34. 34.Digital root of 14605 =
  35. 35.Digital root of 61 × 84 =
  36. 36.Digital root of 90 × 24 =
  37. 37.Digital root of 82 × 57 =
  38. 38.Digital root of 54387 =
  39. 39.Digital root of 4766 =
  40. 40.Digital root of 22 × 67 =

Answer key

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

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