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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 816 · 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 79376 =
  2. 2.Digital root of 83303 =
  3. 3.Digital root of 35 × 26 =
  4. 4.Digital root of 24 × 58 =
  5. 5.Digital root of 85078 =
  6. 6.Digital root of 74 × 55 =
  7. 7.Digital root of 84628 =
  8. 8.Digital root of 40712 =
  9. 9.Digital root of 73842 =
  10. 10.Digital root of 89069 =
  11. 11.Digital root of 10717 =
  12. 12.Digital root of 78100 =
  13. 13.Digital root of 66 × 70 =
  14. 14.Digital root of 40815 =
  15. 15.Digital root of 91 × 25 =
  16. 16.Digital root of 55614 =
  17. 17.Digital root of 3784 =
  18. 18.Digital root of 33371 =
  19. 19.Digital root of 15318 =
  20. 20.Digital root of 40436 =
  21. 21.Digital root of 56375 =
  22. 22.Digital root of 25489 =
  23. 23.Digital root of 67 × 79 =
  24. 24.Digital root of 41 × 83 =
  25. 25.Digital root of 17 × 58 =
  26. 26.Digital root of 28 × 73 =
  27. 27.Digital root of 2263 =
  28. 28.Digital root of 24 × 45 =
  29. 29.Digital root of 71 × 71 =
  30. 30.Digital root of 98671 =
  31. 31.Digital root of 77293 =
  32. 32.Digital root of 89768 =
  33. 33.Digital root of 54 × 16 =
  34. 34.Digital root of 68 × 91 =
  35. 35.Digital root of 16 × 38 =
  36. 36.Digital root of 95082 =
  37. 37.Digital root of 28647 =
  38. 38.Digital root of 78 × 84 =
  39. 39.Digital root of 63772 =
  40. 40.Digital root of 35 × 21 =

Answer key

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

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