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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 214 · 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 × 28 =
  2. 2.Digital root of 81559 =
  3. 3.Digital root of 27 × 86 =
  4. 4.Digital root of 25245 =
  5. 5.Digital root of 97217 =
  6. 6.Digital root of 17143 =
  7. 7.Digital root of 28389 =
  8. 8.Digital root of 28056 =
  9. 9.Digital root of 91906 =
  10. 10.Digital root of 79765 =
  11. 11.Digital root of 81 × 74 =
  12. 12.Digital root of 78 × 83 =
  13. 13.Digital root of 71 × 94 =
  14. 14.Digital root of 34 × 34 =
  15. 15.Digital root of 58 × 33 =
  16. 16.Digital root of 49 × 58 =
  17. 17.Digital root of 35 × 72 =
  18. 18.Digital root of 48 × 24 =
  19. 19.Digital root of 41 × 26 =
  20. 20.Digital root of 37 × 27 =
  21. 21.Digital root of 14272 =
  22. 22.Digital root of 66557 =
  23. 23.Digital root of 59349 =
  24. 24.Digital root of 81 × 76 =
  25. 25.Digital root of 52607 =
  26. 26.Digital root of 39705 =
  27. 27.Digital root of 73639 =
  28. 28.Digital root of 19482 =
  29. 29.Digital root of 3839 =
  30. 30.Digital root of 4091 =
  31. 31.Digital root of 61 × 49 =
  32. 32.Digital root of 32926 =
  33. 33.Digital root of 10106 =
  34. 34.Digital root of 65546 =
  35. 35.Digital root of 40846 =
  36. 36.Digital root of 50 × 17 =
  37. 37.Digital root of 91995 =
  38. 38.Digital root of 13548 =
  39. 39.Digital root of 9007 =
  40. 40.Digital root of 35 × 21 =

Answer key

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

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