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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 258 · 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 59 × 28 =
  2. 2.Digital root of 71487 =
  3. 3.Digital root of 36 × 86 =
  4. 4.Digital root of 18 × 18 =
  5. 5.Digital root of 90997 =
  6. 6.Digital root of 73367 =
  7. 7.Digital root of 75004 =
  8. 8.Digital root of 22 × 73 =
  9. 9.Digital root of 54524 =
  10. 10.Digital root of 5408 =
  11. 11.Digital root of 21 × 27 =
  12. 12.Digital root of 71583 =
  13. 13.Digital root of 18 × 26 =
  14. 14.Digital root of 54844 =
  15. 15.Digital root of 31 × 22 =
  16. 16.Digital root of 80589 =
  17. 17.Digital root of 31 × 96 =
  18. 18.Digital root of 1312 =
  19. 19.Digital root of 95127 =
  20. 20.Digital root of 48 × 70 =
  21. 21.Digital root of 34379 =
  22. 22.Digital root of 40294 =
  23. 23.Digital root of 88 × 30 =
  24. 24.Digital root of 46132 =
  25. 25.Digital root of 23 × 47 =
  26. 26.Digital root of 31 × 54 =
  27. 27.Digital root of 2074 =
  28. 28.Digital root of 78930 =
  29. 29.Digital root of 27 × 22 =
  30. 30.Digital root of 89 × 42 =
  31. 31.Digital root of 87 × 70 =
  32. 32.Digital root of 23 × 91 =
  33. 33.Digital root of 24 × 46 =
  34. 34.Digital root of 20 × 18 =
  35. 35.Digital root of 27 × 54 =
  36. 36.Digital root of 72 × 52 =
  37. 37.Digital root of 10133 =
  38. 38.Digital root of 27519 =
  39. 39.Digital root of 99755 =
  40. 40.Digital root of 66623 =

Answer key

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

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