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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 205 · 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 22 × 75 =
  2. 2.Digital root of 86 × 87 =
  3. 3.Digital root of 31 × 86 =
  4. 4.Digital root of 59 × 79 =
  5. 5.Digital root of 37073 =
  6. 6.Digital root of 93 × 83 =
  7. 7.Digital root of 10829 =
  8. 8.Digital root of 25 × 95 =
  9. 9.Digital root of 87827 =
  10. 10.Digital root of 28759 =
  11. 11.Digital root of 52 × 60 =
  12. 12.Digital root of 2726 =
  13. 13.Digital root of 27384 =
  14. 14.Digital root of 52 × 45 =
  15. 15.Digital root of 37 × 30 =
  16. 16.Digital root of 32 × 32 =
  17. 17.Digital root of 94346 =
  18. 18.Digital root of 32135 =
  19. 19.Digital root of 59 × 26 =
  20. 20.Digital root of 18 × 71 =
  21. 21.Digital root of 89 × 19 =
  22. 22.Digital root of 68 × 65 =
  23. 23.Digital root of 25 × 14 =
  24. 24.Digital root of 3768 =
  25. 25.Digital root of 3313 =
  26. 26.Digital root of 85008 =
  27. 27.Digital root of 37 × 21 =
  28. 28.Digital root of 83312 =
  29. 29.Digital root of 23 × 14 =
  30. 30.Digital root of 27457 =
  31. 31.Digital root of 61584 =
  32. 32.Digital root of 80872 =
  33. 33.Digital root of 16799 =
  34. 34.Digital root of 79 × 88 =
  35. 35.Digital root of 73 × 31 =
  36. 36.Digital root of 50750 =
  37. 37.Digital root of 29 × 16 =
  38. 38.Digital root of 45867 =
  39. 39.Digital root of 2722 =
  40. 40.Digital root of 73 × 42 =

Answer key

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

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