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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 358 · 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 3020 =
  2. 2.Digital root of 52432 =
  3. 3.Digital root of 32 × 75 =
  4. 4.Digital root of 77823 =
  5. 5.Digital root of 16152 =
  6. 6.Digital root of 18786 =
  7. 7.Digital root of 78 × 73 =
  8. 8.Digital root of 58600 =
  9. 9.Digital root of 65253 =
  10. 10.Digital root of 98 × 14 =
  11. 11.Digital root of 60 × 59 =
  12. 12.Digital root of 59 × 98 =
  13. 13.Digital root of 42374 =
  14. 14.Digital root of 20162 =
  15. 15.Digital root of 19 × 63 =
  16. 16.Digital root of 39282 =
  17. 17.Digital root of 15127 =
  18. 18.Digital root of 37453 =
  19. 19.Digital root of 77582 =
  20. 20.Digital root of 16 × 97 =
  21. 21.Digital root of 39302 =
  22. 22.Digital root of 16 × 34 =
  23. 23.Digital root of 69745 =
  24. 24.Digital root of 89348 =
  25. 25.Digital root of 76064 =
  26. 26.Digital root of 70593 =
  27. 27.Digital root of 23796 =
  28. 28.Digital root of 92 × 91 =
  29. 29.Digital root of 91 × 31 =
  30. 30.Digital root of 41 × 87 =
  31. 31.Digital root of 55 × 35 =
  32. 32.Digital root of 57 × 81 =
  33. 33.Digital root of 19 × 52 =
  34. 34.Digital root of 66784 =
  35. 35.Digital root of 12979 =
  36. 36.Digital root of 52720 =
  37. 37.Digital root of 21580 =
  38. 38.Digital root of 97 × 13 =
  39. 39.Digital root of 47 × 94 =
  40. 40.Digital root of 70851 =

Answer key

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

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