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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 785 · 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 69155 =
  2. 2.Digital root of 38 × 47 =
  3. 3.Digital root of 34401 =
  4. 4.Digital root of 39798 =
  5. 5.Digital root of 50810 =
  6. 6.Digital root of 72793 =
  7. 7.Digital root of 29 × 33 =
  8. 8.Digital root of 98663 =
  9. 9.Digital root of 51898 =
  10. 10.Digital root of 81975 =
  11. 11.Digital root of 95 × 59 =
  12. 12.Digital root of 26419 =
  13. 13.Digital root of 86 × 67 =
  14. 14.Digital root of 89254 =
  15. 15.Digital root of 73402 =
  16. 16.Digital root of 91407 =
  17. 17.Digital root of 60234 =
  18. 18.Digital root of 91835 =
  19. 19.Digital root of 20398 =
  20. 20.Digital root of 22 × 14 =
  21. 21.Digital root of 17 × 92 =
  22. 22.Digital root of 65 × 17 =
  23. 23.Digital root of 69 × 14 =
  24. 24.Digital root of 22 × 54 =
  25. 25.Digital root of 16 × 52 =
  26. 26.Digital root of 33 × 58 =
  27. 27.Digital root of 22361 =
  28. 28.Digital root of 35 × 37 =
  29. 29.Digital root of 58 × 98 =
  30. 30.Digital root of 72 × 67 =
  31. 31.Digital root of 27 × 48 =
  32. 32.Digital root of 75 × 49 =
  33. 33.Digital root of 90920 =
  34. 34.Digital root of 79179 =
  35. 35.Digital root of 79 × 41 =
  36. 36.Digital root of 77 × 72 =
  37. 37.Digital root of 31 × 98 =
  38. 38.Digital root of 63 × 25 =
  39. 39.Digital root of 76 × 29 =
  40. 40.Digital root of 53 × 43 =

Answer key

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

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