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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 176 · 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 15514 =
  2. 2.Digital root of 86 × 34 =
  3. 3.Digital root of 33 × 50 =
  4. 4.Digital root of 96569 =
  5. 5.Digital root of 34 × 31 =
  6. 6.Digital root of 79 × 24 =
  7. 7.Digital root of 99639 =
  8. 8.Digital root of 7694 =
  9. 9.Digital root of 80 × 49 =
  10. 10.Digital root of 16 × 98 =
  11. 11.Digital root of 53523 =
  12. 12.Digital root of 24379 =
  13. 13.Digital root of 90 × 84 =
  14. 14.Digital root of 80207 =
  15. 15.Digital root of 96 × 22 =
  16. 16.Digital root of 76 × 60 =
  17. 17.Digital root of 20179 =
  18. 18.Digital root of 92358 =
  19. 19.Digital root of 74518 =
  20. 20.Digital root of 52 × 92 =
  21. 21.Digital root of 78763 =
  22. 22.Digital root of 25069 =
  23. 23.Digital root of 64765 =
  24. 24.Digital root of 93300 =
  25. 25.Digital root of 29765 =
  26. 26.Digital root of 87935 =
  27. 27.Digital root of 87 × 48 =
  28. 28.Digital root of 12487 =
  29. 29.Digital root of 87 × 77 =
  30. 30.Digital root of 39 × 69 =
  31. 31.Digital root of 70 × 50 =
  32. 32.Digital root of 64 × 19 =
  33. 33.Digital root of 22 × 20 =
  34. 34.Digital root of 17 × 18 =
  35. 35.Digital root of 74 × 64 =
  36. 36.Digital root of 74 × 26 =
  37. 37.Digital root of 88133 =
  38. 38.Digital root of 71 × 17 =
  39. 39.Digital root of 91348 =
  40. 40.Digital root of 75 × 12 =

Answer key

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

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