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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 939 · 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 14 × 46 =
  2. 2.Digital root of 21 × 31 =
  3. 3.Digital root of 99 × 63 =
  4. 4.Digital root of 89606 =
  5. 5.Digital root of 61 × 70 =
  6. 6.Digital root of 83 × 69 =
  7. 7.Digital root of 55 × 46 =
  8. 8.Digital root of 52840 =
  9. 9.Digital root of 38 × 18 =
  10. 10.Digital root of 82 × 32 =
  11. 11.Digital root of 98968 =
  12. 12.Digital root of 94994 =
  13. 13.Digital root of 85060 =
  14. 14.Digital root of 78 × 73 =
  15. 15.Digital root of 24486 =
  16. 16.Digital root of 30810 =
  17. 17.Digital root of 81 × 44 =
  18. 18.Digital root of 94947 =
  19. 19.Digital root of 73 × 38 =
  20. 20.Digital root of 76089 =
  21. 21.Digital root of 23 × 21 =
  22. 22.Digital root of 54037 =
  23. 23.Digital root of 92295 =
  24. 24.Digital root of 57163 =
  25. 25.Digital root of 72 × 97 =
  26. 26.Digital root of 39751 =
  27. 27.Digital root of 69 × 62 =
  28. 28.Digital root of 14 × 80 =
  29. 29.Digital root of 57024 =
  30. 30.Digital root of 64132 =
  31. 31.Digital root of 99725 =
  32. 32.Digital root of 72 × 36 =
  33. 33.Digital root of 81 × 20 =
  34. 34.Digital root of 61964 =
  35. 35.Digital root of 40 × 94 =
  36. 36.Digital root of 54614 =
  37. 37.Digital root of 17547 =
  38. 38.Digital root of 88244 =
  39. 39.Digital root of 6571 =
  40. 40.Digital root of 6743 =

Answer key

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

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