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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 150 · 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 40051 =
  2. 2.Digital root of 88085 =
  3. 3.Digital root of 89053 =
  4. 4.Digital root of 83 × 51 =
  5. 5.Digital root of 11022 =
  6. 6.Digital root of 15 × 31 =
  7. 7.Digital root of 89 × 63 =
  8. 8.Digital root of 46 × 22 =
  9. 9.Digital root of 81516 =
  10. 10.Digital root of 38 × 47 =
  11. 11.Digital root of 98300 =
  12. 12.Digital root of 39136 =
  13. 13.Digital root of 8997 =
  14. 14.Digital root of 44568 =
  15. 15.Digital root of 63331 =
  16. 16.Digital root of 76 × 89 =
  17. 17.Digital root of 74621 =
  18. 18.Digital root of 70 × 22 =
  19. 19.Digital root of 97 × 17 =
  20. 20.Digital root of 15 × 19 =
  21. 21.Digital root of 24 × 52 =
  22. 22.Digital root of 15746 =
  23. 23.Digital root of 16 × 26 =
  24. 24.Digital root of 45 × 77 =
  25. 25.Digital root of 21410 =
  26. 26.Digital root of 60658 =
  27. 27.Digital root of 72976 =
  28. 28.Digital root of 480 =
  29. 29.Digital root of 59931 =
  30. 30.Digital root of 30 × 16 =
  31. 31.Digital root of 78170 =
  32. 32.Digital root of 24956 =
  33. 33.Digital root of 92102 =
  34. 34.Digital root of 89 × 86 =
  35. 35.Digital root of 35200 =
  36. 36.Digital root of 56111 =
  37. 37.Digital root of 76 × 80 =
  38. 38.Digital root of 29 × 49 =
  39. 39.Digital root of 23894 =
  40. 40.Digital root of 58 × 14 =

Answer key

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

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