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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 83 · 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 18 × 37 =
  2. 2.Digital root of 16400 =
  3. 3.Digital root of 40 × 92 =
  4. 4.Digital root of 49 × 27 =
  5. 5.Digital root of 99404 =
  6. 6.Digital root of 27 × 80 =
  7. 7.Digital root of 41 × 35 =
  8. 8.Digital root of 17937 =
  9. 9.Digital root of 53539 =
  10. 10.Digital root of 28 × 93 =
  11. 11.Digital root of 46 × 54 =
  12. 12.Digital root of 7982 =
  13. 13.Digital root of 54848 =
  14. 14.Digital root of 63 × 40 =
  15. 15.Digital root of 72215 =
  16. 16.Digital root of 53587 =
  17. 17.Digital root of 70043 =
  18. 18.Digital root of 62142 =
  19. 19.Digital root of 79632 =
  20. 20.Digital root of 67624 =
  21. 21.Digital root of 75 × 33 =
  22. 22.Digital root of 10437 =
  23. 23.Digital root of 67 × 31 =
  24. 24.Digital root of 95 × 46 =
  25. 25.Digital root of 54 × 79 =
  26. 26.Digital root of 94 × 46 =
  27. 27.Digital root of 69 × 75 =
  28. 28.Digital root of 6597 =
  29. 29.Digital root of 34352 =
  30. 30.Digital root of 45 × 30 =
  31. 31.Digital root of 5898 =
  32. 32.Digital root of 44880 =
  33. 33.Digital root of 37 × 16 =
  34. 34.Digital root of 98691 =
  35. 35.Digital root of 80 × 35 =
  36. 36.Digital root of 47037 =
  37. 37.Digital root of 17437 =
  38. 38.Digital root of 19 × 85 =
  39. 39.Digital root of 11407 =
  40. 40.Digital root of 8294 =

Answer key

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

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