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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 143 · 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 88 × 98 =
  2. 2.Digital root of 11105 =
  3. 3.Digital root of 98785 =
  4. 4.Digital root of 25 × 89 =
  5. 5.Digital root of 72811 =
  6. 6.Digital root of 25901 =
  7. 7.Digital root of 3664 =
  8. 8.Digital root of 14053 =
  9. 9.Digital root of 17 × 72 =
  10. 10.Digital root of 74 × 96 =
  11. 11.Digital root of 6648 =
  12. 12.Digital root of 17 × 50 =
  13. 13.Digital root of 68468 =
  14. 14.Digital root of 84529 =
  15. 15.Digital root of 25 × 67 =
  16. 16.Digital root of 40 × 88 =
  17. 17.Digital root of 73386 =
  18. 18.Digital root of 84336 =
  19. 19.Digital root of 37 × 15 =
  20. 20.Digital root of 74867 =
  21. 21.Digital root of 71224 =
  22. 22.Digital root of 59 × 91 =
  23. 23.Digital root of 53154 =
  24. 24.Digital root of 69508 =
  25. 25.Digital root of 18898 =
  26. 26.Digital root of 43947 =
  27. 27.Digital root of 36507 =
  28. 28.Digital root of 10720 =
  29. 29.Digital root of 19379 =
  30. 30.Digital root of 54 × 86 =
  31. 31.Digital root of 91272 =
  32. 32.Digital root of 53 × 65 =
  33. 33.Digital root of 57 × 42 =
  34. 34.Digital root of 13703 =
  35. 35.Digital root of 39092 =
  36. 36.Digital root of 19 × 70 =
  37. 37.Digital root of 28 × 91 =
  38. 38.Digital root of 25986 =
  39. 39.Digital root of 36 × 74 =
  40. 40.Digital root of 86 × 18 =

Answer key

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

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