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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 316 · 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 92 × 83 =
  2. 2.Digital root of 68274 =
  3. 3.Digital root of 32348 =
  4. 4.Digital root of 29976 =
  5. 5.Digital root of 2420 =
  6. 6.Digital root of 86 × 75 =
  7. 7.Digital root of 228 =
  8. 8.Digital root of 48498 =
  9. 9.Digital root of 52 × 78 =
  10. 10.Digital root of 72 × 34 =
  11. 11.Digital root of 24631 =
  12. 12.Digital root of 51781 =
  13. 13.Digital root of 86 × 13 =
  14. 14.Digital root of 15 × 85 =
  15. 15.Digital root of 49013 =
  16. 16.Digital root of 73776 =
  17. 17.Digital root of 45 × 58 =
  18. 18.Digital root of 81611 =
  19. 19.Digital root of 27335 =
  20. 20.Digital root of 52 × 59 =
  21. 21.Digital root of 68 × 74 =
  22. 22.Digital root of 89 × 87 =
  23. 23.Digital root of 30 × 50 =
  24. 24.Digital root of 46973 =
  25. 25.Digital root of 96 × 80 =
  26. 26.Digital root of 22 × 75 =
  27. 27.Digital root of 17 × 57 =
  28. 28.Digital root of 15 × 22 =
  29. 29.Digital root of 15 × 71 =
  30. 30.Digital root of 52 × 95 =
  31. 31.Digital root of 22867 =
  32. 32.Digital root of 72 × 71 =
  33. 33.Digital root of 84 × 15 =
  34. 34.Digital root of 3719 =
  35. 35.Digital root of 66 × 34 =
  36. 36.Digital root of 23 × 77 =
  37. 37.Digital root of 29 × 31 =
  38. 38.Digital root of 34508 =
  39. 39.Digital root of 35 × 69 =
  40. 40.Digital root of 48 × 47 =

Answer key

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

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