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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 210 · 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 5430 =
  2. 2.Digital root of 31371 =
  3. 3.Digital root of 65 × 84 =
  4. 4.Digital root of 35825 =
  5. 5.Digital root of 40 × 34 =
  6. 6.Digital root of 37506 =
  7. 7.Digital root of 53019 =
  8. 8.Digital root of 28 × 80 =
  9. 9.Digital root of 87 × 71 =
  10. 10.Digital root of 70 × 16 =
  11. 11.Digital root of 570 =
  12. 12.Digital root of 67 × 69 =
  13. 13.Digital root of 71 × 38 =
  14. 14.Digital root of 27 × 99 =
  15. 15.Digital root of 7901 =
  16. 16.Digital root of 58 × 96 =
  17. 17.Digital root of 90834 =
  18. 18.Digital root of 88 × 25 =
  19. 19.Digital root of 95 × 97 =
  20. 20.Digital root of 20 × 67 =
  21. 21.Digital root of 7266 =
  22. 22.Digital root of 52428 =
  23. 23.Digital root of 83 × 91 =
  24. 24.Digital root of 38609 =
  25. 25.Digital root of 19 × 55 =
  26. 26.Digital root of 26615 =
  27. 27.Digital root of 92 × 35 =
  28. 28.Digital root of 52739 =
  29. 29.Digital root of 45 × 65 =
  30. 30.Digital root of 17764 =
  31. 31.Digital root of 87 × 61 =
  32. 32.Digital root of 62 × 37 =
  33. 33.Digital root of 5941 =
  34. 34.Digital root of 53304 =
  35. 35.Digital root of 39 × 41 =
  36. 36.Digital root of 29 × 87 =
  37. 37.Digital root of 35 × 85 =
  38. 38.Digital root of 14729 =
  39. 39.Digital root of 15098 =
  40. 40.Digital root of 98 × 63 =

Answer key

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

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