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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 518 · 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 98476 =
  2. 2.Digital root of 18 × 31 =
  3. 3.Digital root of 3277 =
  4. 4.Digital root of 24 × 24 =
  5. 5.Digital root of 40455 =
  6. 6.Digital root of 17 × 82 =
  7. 7.Digital root of 50784 =
  8. 8.Digital root of 43606 =
  9. 9.Digital root of 86819 =
  10. 10.Digital root of 55 × 23 =
  11. 11.Digital root of 50618 =
  12. 12.Digital root of 82 × 98 =
  13. 13.Digital root of 99 × 78 =
  14. 14.Digital root of 98 × 49 =
  15. 15.Digital root of 3898 =
  16. 16.Digital root of 91 × 67 =
  17. 17.Digital root of 52 × 55 =
  18. 18.Digital root of 16502 =
  19. 19.Digital root of 31 × 81 =
  20. 20.Digital root of 35 × 18 =
  21. 21.Digital root of 71 × 51 =
  22. 22.Digital root of 8962 =
  23. 23.Digital root of 61 × 63 =
  24. 24.Digital root of 29 × 18 =
  25. 25.Digital root of 74 × 26 =
  26. 26.Digital root of 87 × 12 =
  27. 27.Digital root of 46 × 71 =
  28. 28.Digital root of 78409 =
  29. 29.Digital root of 83947 =
  30. 30.Digital root of 33 × 18 =
  31. 31.Digital root of 89972 =
  32. 32.Digital root of 22 × 46 =
  33. 33.Digital root of 31156 =
  34. 34.Digital root of 7377 =
  35. 35.Digital root of 91 × 34 =
  36. 36.Digital root of 19057 =
  37. 37.Digital root of 45 × 32 =
  38. 38.Digital root of 90071 =
  39. 39.Digital root of 83486 =
  40. 40.Digital root of 11529 =

Answer key

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

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