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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 857 · 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 41 × 72 =
  2. 2.Digital root of 48121 =
  3. 3.Digital root of 61894 =
  4. 4.Digital root of 34 × 57 =
  5. 5.Digital root of 52 × 55 =
  6. 6.Digital root of 7988 =
  7. 7.Digital root of 93 × 64 =
  8. 8.Digital root of 91396 =
  9. 9.Digital root of 33623 =
  10. 10.Digital root of 35 × 84 =
  11. 11.Digital root of 11331 =
  12. 12.Digital root of 13135 =
  13. 13.Digital root of 49282 =
  14. 14.Digital root of 23 × 86 =
  15. 15.Digital root of 91101 =
  16. 16.Digital root of 51 × 21 =
  17. 17.Digital root of 27463 =
  18. 18.Digital root of 27187 =
  19. 19.Digital root of 65853 =
  20. 20.Digital root of 349 =
  21. 21.Digital root of 62963 =
  22. 22.Digital root of 46 × 72 =
  23. 23.Digital root of 76243 =
  24. 24.Digital root of 94 × 19 =
  25. 25.Digital root of 25286 =
  26. 26.Digital root of 96 × 43 =
  27. 27.Digital root of 66 × 80 =
  28. 28.Digital root of 16 × 62 =
  29. 29.Digital root of 46142 =
  30. 30.Digital root of 31593 =
  31. 31.Digital root of 89 × 37 =
  32. 32.Digital root of 22015 =
  33. 33.Digital root of 32 × 47 =
  34. 34.Digital root of 4234 =
  35. 35.Digital root of 36533 =
  36. 36.Digital root of 51093 =
  37. 37.Digital root of 60 × 61 =
  38. 38.Digital root of 32 × 75 =
  39. 39.Digital root of 89376 =
  40. 40.Digital root of 51 × 26 =

Answer key

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

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