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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 309 · 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 67 × 87 =
  2. 2.Digital root of 74966 =
  3. 3.Digital root of 44689 =
  4. 4.Digital root of 93 × 27 =
  5. 5.Digital root of 79 × 15 =
  6. 6.Digital root of 15906 =
  7. 7.Digital root of 62484 =
  8. 8.Digital root of 86 × 52 =
  9. 9.Digital root of 24495 =
  10. 10.Digital root of 56 × 40 =
  11. 11.Digital root of 71713 =
  12. 12.Digital root of 25 × 21 =
  13. 13.Digital root of 58 × 49 =
  14. 14.Digital root of 18079 =
  15. 15.Digital root of 80 × 16 =
  16. 16.Digital root of 49275 =
  17. 17.Digital root of 63 × 78 =
  18. 18.Digital root of 48 × 13 =
  19. 19.Digital root of 52 × 49 =
  20. 20.Digital root of 63500 =
  21. 21.Digital root of 75 × 91 =
  22. 22.Digital root of 87 × 27 =
  23. 23.Digital root of 42 × 37 =
  24. 24.Digital root of 8315 =
  25. 25.Digital root of 83 × 94 =
  26. 26.Digital root of 16296 =
  27. 27.Digital root of 52 × 93 =
  28. 28.Digital root of 51 × 49 =
  29. 29.Digital root of 76 × 29 =
  30. 30.Digital root of 54586 =
  31. 31.Digital root of 34 × 88 =
  32. 32.Digital root of 78738 =
  33. 33.Digital root of 94568 =
  34. 34.Digital root of 47771 =
  35. 35.Digital root of 32 × 79 =
  36. 36.Digital root of 79661 =
  37. 37.Digital root of 65 × 97 =
  38. 38.Digital root of 89 × 57 =
  39. 39.Digital root of 16095 =
  40. 40.Digital root of 86421 =

Answer key

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

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