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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 660 · 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 18675 =
  2. 2.Digital root of 49287 =
  3. 3.Digital root of 86 × 62 =
  4. 4.Digital root of 73319 =
  5. 5.Digital root of 94 × 81 =
  6. 6.Digital root of 75 × 89 =
  7. 7.Digital root of 64 × 88 =
  8. 8.Digital root of 72 × 99 =
  9. 9.Digital root of 14706 =
  10. 10.Digital root of 49 × 31 =
  11. 11.Digital root of 71042 =
  12. 12.Digital root of 69674 =
  13. 13.Digital root of 82072 =
  14. 14.Digital root of 88 × 58 =
  15. 15.Digital root of 58 × 43 =
  16. 16.Digital root of 16280 =
  17. 17.Digital root of 8889 =
  18. 18.Digital root of 82096 =
  19. 19.Digital root of 9994 =
  20. 20.Digital root of 73 × 48 =
  21. 21.Digital root of 90751 =
  22. 22.Digital root of 97 × 62 =
  23. 23.Digital root of 49376 =
  24. 24.Digital root of 72 × 13 =
  25. 25.Digital root of 79577 =
  26. 26.Digital root of 28 × 22 =
  27. 27.Digital root of 59630 =
  28. 28.Digital root of 12 × 28 =
  29. 29.Digital root of 45 × 36 =
  30. 30.Digital root of 40060 =
  31. 31.Digital root of 61097 =
  32. 32.Digital root of 63831 =
  33. 33.Digital root of 34226 =
  34. 34.Digital root of 76 × 39 =
  35. 35.Digital root of 21403 =
  36. 36.Digital root of 40195 =
  37. 37.Digital root of 99 × 80 =
  38. 38.Digital root of 23 × 50 =
  39. 39.Digital root of 25 × 39 =
  40. 40.Digital root of 75 × 54 =

Answer key

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

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