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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 513 · 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 53 × 83 =
  2. 2.Digital root of 87490 =
  3. 3.Digital root of 28380 =
  4. 4.Digital root of 70 × 13 =
  5. 5.Digital root of 91330 =
  6. 6.Digital root of 58325 =
  7. 7.Digital root of 85098 =
  8. 8.Digital root of 30537 =
  9. 9.Digital root of 57938 =
  10. 10.Digital root of 91 × 37 =
  11. 11.Digital root of 11226 =
  12. 12.Digital root of 24149 =
  13. 13.Digital root of 47382 =
  14. 14.Digital root of 52 × 47 =
  15. 15.Digital root of 28 × 35 =
  16. 16.Digital root of 16 × 59 =
  17. 17.Digital root of 11432 =
  18. 18.Digital root of 44 × 18 =
  19. 19.Digital root of 81178 =
  20. 20.Digital root of 68 × 21 =
  21. 21.Digital root of 51 × 71 =
  22. 22.Digital root of 23 × 75 =
  23. 23.Digital root of 14793 =
  24. 24.Digital root of 20912 =
  25. 25.Digital root of 25 × 50 =
  26. 26.Digital root of 70 × 16 =
  27. 27.Digital root of 75 × 18 =
  28. 28.Digital root of 48 × 74 =
  29. 29.Digital root of 86161 =
  30. 30.Digital root of 18163 =
  31. 31.Digital root of 56648 =
  32. 32.Digital root of 32900 =
  33. 33.Digital root of 94 × 44 =
  34. 34.Digital root of 55238 =
  35. 35.Digital root of 51383 =
  36. 36.Digital root of 58 × 27 =
  37. 37.Digital root of 1649 =
  38. 38.Digital root of 33214 =
  39. 39.Digital root of 50 × 82 =
  40. 40.Digital root of 48226 =

Answer key

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

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