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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 631 · 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 89 × 54 =
  2. 2.Digital root of 24 × 33 =
  3. 3.Digital root of 44 × 80 =
  4. 4.Digital root of 53 × 65 =
  5. 5.Digital root of 76826 =
  6. 6.Digital root of 94349 =
  7. 7.Digital root of 74654 =
  8. 8.Digital root of 27852 =
  9. 9.Digital root of 97 × 42 =
  10. 10.Digital root of 36 × 35 =
  11. 11.Digital root of 52 × 58 =
  12. 12.Digital root of 33 × 69 =
  13. 13.Digital root of 64330 =
  14. 14.Digital root of 22 × 57 =
  15. 15.Digital root of 13690 =
  16. 16.Digital root of 13048 =
  17. 17.Digital root of 85213 =
  18. 18.Digital root of 71 × 64 =
  19. 19.Digital root of 56 × 71 =
  20. 20.Digital root of 14964 =
  21. 21.Digital root of 14608 =
  22. 22.Digital root of 55266 =
  23. 23.Digital root of 49 × 59 =
  24. 24.Digital root of 4786 =
  25. 25.Digital root of 32069 =
  26. 26.Digital root of 35 × 17 =
  27. 27.Digital root of 92 × 27 =
  28. 28.Digital root of 26 × 50 =
  29. 29.Digital root of 21 × 30 =
  30. 30.Digital root of 71 × 75 =
  31. 31.Digital root of 6748 =
  32. 32.Digital root of 61353 =
  33. 33.Digital root of 71363 =
  34. 34.Digital root of 26942 =
  35. 35.Digital root of 90 × 77 =
  36. 36.Digital root of 76786 =
  37. 37.Digital root of 38921 =
  38. 38.Digital root of 51 × 53 =
  39. 39.Digital root of 24923 =
  40. 40.Digital root of 59029 =

Answer key

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

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