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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 359 · 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 4088 =
  2. 2.Digital root of 34 × 16 =
  3. 3.Digital root of 29 × 69 =
  4. 4.Digital root of 93377 =
  5. 5.Digital root of 80 × 93 =
  6. 6.Digital root of 40 × 95 =
  7. 7.Digital root of 79 × 92 =
  8. 8.Digital root of 50 × 92 =
  9. 9.Digital root of 20539 =
  10. 10.Digital root of 37 × 41 =
  11. 11.Digital root of 89692 =
  12. 12.Digital root of 80995 =
  13. 13.Digital root of 17 × 38 =
  14. 14.Digital root of 79013 =
  15. 15.Digital root of 22 × 17 =
  16. 16.Digital root of 26 × 79 =
  17. 17.Digital root of 63367 =
  18. 18.Digital root of 86 × 60 =
  19. 19.Digital root of 63 × 37 =
  20. 20.Digital root of 18 × 34 =
  21. 21.Digital root of 39659 =
  22. 22.Digital root of 62 × 88 =
  23. 23.Digital root of 41 × 27 =
  24. 24.Digital root of 18907 =
  25. 25.Digital root of 30 × 25 =
  26. 26.Digital root of 98 × 35 =
  27. 27.Digital root of 49952 =
  28. 28.Digital root of 11281 =
  29. 29.Digital root of 5242 =
  30. 30.Digital root of 58948 =
  31. 31.Digital root of 59 × 50 =
  32. 32.Digital root of 29 × 18 =
  33. 33.Digital root of 94455 =
  34. 34.Digital root of 45 × 29 =
  35. 35.Digital root of 81794 =
  36. 36.Digital root of 3057 =
  37. 37.Digital root of 38 × 93 =
  38. 38.Digital root of 51 × 21 =
  39. 39.Digital root of 40915 =
  40. 40.Digital root of 43 × 20 =

Answer key

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

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