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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 215 · 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 36 × 83 =
  2. 2.Digital root of 232 =
  3. 3.Digital root of 87 × 94 =
  4. 4.Digital root of 34237 =
  5. 5.Digital root of 19 × 53 =
  6. 6.Digital root of 19 × 31 =
  7. 7.Digital root of 29854 =
  8. 8.Digital root of 75 × 30 =
  9. 9.Digital root of 85839 =
  10. 10.Digital root of 48 × 80 =
  11. 11.Digital root of 8714 =
  12. 12.Digital root of 50 × 93 =
  13. 13.Digital root of 43097 =
  14. 14.Digital root of 61 × 23 =
  15. 15.Digital root of 75700 =
  16. 16.Digital root of 54 × 14 =
  17. 17.Digital root of 8299 =
  18. 18.Digital root of 14 × 73 =
  19. 19.Digital root of 84644 =
  20. 20.Digital root of 73460 =
  21. 21.Digital root of 54 × 76 =
  22. 22.Digital root of 40 × 48 =
  23. 23.Digital root of 26957 =
  24. 24.Digital root of 29 × 79 =
  25. 25.Digital root of 32298 =
  26. 26.Digital root of 62337 =
  27. 27.Digital root of 16 × 80 =
  28. 28.Digital root of 45038 =
  29. 29.Digital root of 41430 =
  30. 30.Digital root of 25676 =
  31. 31.Digital root of 22801 =
  32. 32.Digital root of 88 × 30 =
  33. 33.Digital root of 35 × 14 =
  34. 34.Digital root of 9643 =
  35. 35.Digital root of 17332 =
  36. 36.Digital root of 83 × 87 =
  37. 37.Digital root of 21 × 61 =
  38. 38.Digital root of 67 × 49 =
  39. 39.Digital root of 23 × 13 =
  40. 40.Digital root of 56 × 35 =

Answer key

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

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