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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 945 · 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 19 × 17 =
  2. 2.Digital root of 30689 =
  3. 3.Digital root of 18 × 20 =
  4. 4.Digital root of 75990 =
  5. 5.Digital root of 79 × 57 =
  6. 6.Digital root of 76281 =
  7. 7.Digital root of 60119 =
  8. 8.Digital root of 8365 =
  9. 9.Digital root of 35 × 87 =
  10. 10.Digital root of 56 × 29 =
  11. 11.Digital root of 55944 =
  12. 12.Digital root of 43394 =
  13. 13.Digital root of 92 × 78 =
  14. 14.Digital root of 47 × 28 =
  15. 15.Digital root of 12 × 98 =
  16. 16.Digital root of 82 × 85 =
  17. 17.Digital root of 51489 =
  18. 18.Digital root of 66152 =
  19. 19.Digital root of 5603 =
  20. 20.Digital root of 61 × 96 =
  21. 21.Digital root of 62250 =
  22. 22.Digital root of 69935 =
  23. 23.Digital root of 94 × 16 =
  24. 24.Digital root of 92 × 32 =
  25. 25.Digital root of 45668 =
  26. 26.Digital root of 75 × 62 =
  27. 27.Digital root of 29284 =
  28. 28.Digital root of 14 × 38 =
  29. 29.Digital root of 47 × 80 =
  30. 30.Digital root of 74687 =
  31. 31.Digital root of 35569 =
  32. 32.Digital root of 69316 =
  33. 33.Digital root of 73334 =
  34. 34.Digital root of 52658 =
  35. 35.Digital root of 41 × 67 =
  36. 36.Digital root of 99 × 21 =
  37. 37.Digital root of 76 × 99 =
  38. 38.Digital root of 87017 =
  39. 39.Digital root of 15 × 62 =
  40. 40.Digital root of 39632 =

Answer key

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

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