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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 416 · 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 46 × 54 =
  2. 2.Digital root of 41 × 95 =
  3. 3.Digital root of 46 × 93 =
  4. 4.Digital root of 14056 =
  5. 5.Digital root of 74182 =
  6. 6.Digital root of 56359 =
  7. 7.Digital root of 73 × 83 =
  8. 8.Digital root of 20 × 79 =
  9. 9.Digital root of 75 × 53 =
  10. 10.Digital root of 14 × 30 =
  11. 11.Digital root of 67 × 54 =
  12. 12.Digital root of 20974 =
  13. 13.Digital root of 397 =
  14. 14.Digital root of 95517 =
  15. 15.Digital root of 16 × 58 =
  16. 16.Digital root of 19542 =
  17. 17.Digital root of 32 × 58 =
  18. 18.Digital root of 30245 =
  19. 19.Digital root of 56 × 43 =
  20. 20.Digital root of 19 × 93 =
  21. 21.Digital root of 79177 =
  22. 22.Digital root of 54 × 50 =
  23. 23.Digital root of 94 × 53 =
  24. 24.Digital root of 38718 =
  25. 25.Digital root of 70401 =
  26. 26.Digital root of 73 × 84 =
  27. 27.Digital root of 57339 =
  28. 28.Digital root of 71976 =
  29. 29.Digital root of 45446 =
  30. 30.Digital root of 66 × 28 =
  31. 31.Digital root of 81752 =
  32. 32.Digital root of 86 × 91 =
  33. 33.Digital root of 27 × 89 =
  34. 34.Digital root of 95 × 65 =
  35. 35.Digital root of 25678 =
  36. 36.Digital root of 13 × 15 =
  37. 37.Digital root of 98 × 94 =
  38. 38.Digital root of 34909 =
  39. 39.Digital root of 31746 =
  40. 40.Digital root of 87704 =

Answer key

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

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