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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 837 · 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 53742 =
  2. 2.Digital root of 43 × 32 =
  3. 3.Digital root of 49148 =
  4. 4.Digital root of 13207 =
  5. 5.Digital root of 45 × 80 =
  6. 6.Digital root of 79 × 65 =
  7. 7.Digital root of 16807 =
  8. 8.Digital root of 98 × 56 =
  9. 9.Digital root of 65 × 46 =
  10. 10.Digital root of 51 × 94 =
  11. 11.Digital root of 61 × 98 =
  12. 12.Digital root of 53 × 61 =
  13. 13.Digital root of 88 × 85 =
  14. 14.Digital root of 43089 =
  15. 15.Digital root of 59129 =
  16. 16.Digital root of 56097 =
  17. 17.Digital root of 47643 =
  18. 18.Digital root of 67901 =
  19. 19.Digital root of 22 × 85 =
  20. 20.Digital root of 45717 =
  21. 21.Digital root of 49 × 89 =
  22. 22.Digital root of 42 × 12 =
  23. 23.Digital root of 60580 =
  24. 24.Digital root of 85721 =
  25. 25.Digital root of 63 × 95 =
  26. 26.Digital root of 46180 =
  27. 27.Digital root of 37833 =
  28. 28.Digital root of 97 × 37 =
  29. 29.Digital root of 9267 =
  30. 30.Digital root of 68 × 37 =
  31. 31.Digital root of 50607 =
  32. 32.Digital root of 50705 =
  33. 33.Digital root of 77385 =
  34. 34.Digital root of 13001 =
  35. 35.Digital root of 30 × 46 =
  36. 36.Digital root of 35229 =
  37. 37.Digital root of 73730 =
  38. 38.Digital root of 23 × 87 =
  39. 39.Digital root of 72 × 86 =
  40. 40.Digital root of 74 × 88 =

Answer key

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

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