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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 600 · 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 24 × 72 =
  2. 2.Digital root of 71300 =
  3. 3.Digital root of 98 × 29 =
  4. 4.Digital root of 69 × 22 =
  5. 5.Digital root of 45977 =
  6. 6.Digital root of 47502 =
  7. 7.Digital root of 23 × 25 =
  8. 8.Digital root of 26 × 33 =
  9. 9.Digital root of 72817 =
  10. 10.Digital root of 37206 =
  11. 11.Digital root of 43545 =
  12. 12.Digital root of 98 × 40 =
  13. 13.Digital root of 79 × 31 =
  14. 14.Digital root of 62 × 33 =
  15. 15.Digital root of 31638 =
  16. 16.Digital root of 13 × 33 =
  17. 17.Digital root of 16 × 63 =
  18. 18.Digital root of 12 × 15 =
  19. 19.Digital root of 77 × 87 =
  20. 20.Digital root of 30408 =
  21. 21.Digital root of 97 × 52 =
  22. 22.Digital root of 87891 =
  23. 23.Digital root of 52 × 71 =
  24. 24.Digital root of 44 × 90 =
  25. 25.Digital root of 20783 =
  26. 26.Digital root of 94 × 38 =
  27. 27.Digital root of 14174 =
  28. 28.Digital root of 64 × 70 =
  29. 29.Digital root of 36 × 97 =
  30. 30.Digital root of 31 × 23 =
  31. 31.Digital root of 9903 =
  32. 32.Digital root of 66 × 14 =
  33. 33.Digital root of 90 × 14 =
  34. 34.Digital root of 80868 =
  35. 35.Digital root of 72 × 29 =
  36. 36.Digital root of 98 × 36 =
  37. 37.Digital root of 21 × 77 =
  38. 38.Digital root of 72 × 43 =
  39. 39.Digital root of 54 × 23 =
  40. 40.Digital root of 76 × 85 =

Answer key

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

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