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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 867 · 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 14 × 62 =
  2. 2.Digital root of 69 × 30 =
  3. 3.Digital root of 19 × 90 =
  4. 4.Digital root of 14 × 34 =
  5. 5.Digital root of 35 × 28 =
  6. 6.Digital root of 18479 =
  7. 7.Digital root of 37 × 47 =
  8. 8.Digital root of 32 × 12 =
  9. 9.Digital root of 46 × 45 =
  10. 10.Digital root of 91375 =
  11. 11.Digital root of 17233 =
  12. 12.Digital root of 88545 =
  13. 13.Digital root of 17579 =
  14. 14.Digital root of 28 × 78 =
  15. 15.Digital root of 35 × 62 =
  16. 16.Digital root of 78 × 29 =
  17. 17.Digital root of 26 × 42 =
  18. 18.Digital root of 80 × 85 =
  19. 19.Digital root of 59468 =
  20. 20.Digital root of 27 × 62 =
  21. 21.Digital root of 29 × 86 =
  22. 22.Digital root of 93 × 65 =
  23. 23.Digital root of 16 × 53 =
  24. 24.Digital root of 22 × 69 =
  25. 25.Digital root of 37 × 49 =
  26. 26.Digital root of 75567 =
  27. 27.Digital root of 43 × 94 =
  28. 28.Digital root of 52 × 57 =
  29. 29.Digital root of 57 × 25 =
  30. 30.Digital root of 53935 =
  31. 31.Digital root of 66 × 20 =
  32. 32.Digital root of 68 × 29 =
  33. 33.Digital root of 17015 =
  34. 34.Digital root of 51 × 51 =
  35. 35.Digital root of 77 × 23 =
  36. 36.Digital root of 19696 =
  37. 37.Digital root of 34 × 43 =
  38. 38.Digital root of 45 × 43 =
  39. 39.Digital root of 19 × 30 =
  40. 40.Digital root of 57104 =

Answer key

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

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