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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 682 · 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 97729 =
  2. 2.Digital root of 98 × 15 =
  3. 3.Digital root of 50433 =
  4. 4.Digital root of 45730 =
  5. 5.Digital root of 28 × 46 =
  6. 6.Digital root of 32 × 90 =
  7. 7.Digital root of 4399 =
  8. 8.Digital root of 90 × 84 =
  9. 9.Digital root of 37488 =
  10. 10.Digital root of 88 × 56 =
  11. 11.Digital root of 57 × 74 =
  12. 12.Digital root of 28902 =
  13. 13.Digital root of 74863 =
  14. 14.Digital root of 83085 =
  15. 15.Digital root of 32 × 60 =
  16. 16.Digital root of 307 =
  17. 17.Digital root of 97797 =
  18. 18.Digital root of 77486 =
  19. 19.Digital root of 81044 =
  20. 20.Digital root of 34 × 16 =
  21. 21.Digital root of 80902 =
  22. 22.Digital root of 56435 =
  23. 23.Digital root of 13310 =
  24. 24.Digital root of 25 × 77 =
  25. 25.Digital root of 62 × 15 =
  26. 26.Digital root of 15366 =
  27. 27.Digital root of 80818 =
  28. 28.Digital root of 4144 =
  29. 29.Digital root of 61145 =
  30. 30.Digital root of 380 =
  31. 31.Digital root of 93905 =
  32. 32.Digital root of 25036 =
  33. 33.Digital root of 5730 =
  34. 34.Digital root of 75545 =
  35. 35.Digital root of 25 × 40 =
  36. 36.Digital root of 62660 =
  37. 37.Digital root of 65264 =
  38. 38.Digital root of 14 × 17 =
  39. 39.Digital root of 29612 =
  40. 40.Digital root of 19837 =

Answer key

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

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