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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 103 · 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 84 × 44 =
  2. 2.Digital root of 81215 =
  3. 3.Digital root of 16819 =
  4. 4.Digital root of 72 × 15 =
  5. 5.Digital root of 98271 =
  6. 6.Digital root of 1404 =
  7. 7.Digital root of 58604 =
  8. 8.Digital root of 64856 =
  9. 9.Digital root of 20552 =
  10. 10.Digital root of 15 × 84 =
  11. 11.Digital root of 55 × 46 =
  12. 12.Digital root of 28 × 74 =
  13. 13.Digital root of 33 × 74 =
  14. 14.Digital root of 58492 =
  15. 15.Digital root of 75 × 91 =
  16. 16.Digital root of 59 × 75 =
  17. 17.Digital root of 83 × 38 =
  18. 18.Digital root of 94388 =
  19. 19.Digital root of 19 × 48 =
  20. 20.Digital root of 28223 =
  21. 21.Digital root of 53 × 45 =
  22. 22.Digital root of 56 × 30 =
  23. 23.Digital root of 99 × 39 =
  24. 24.Digital root of 28118 =
  25. 25.Digital root of 86 × 75 =
  26. 26.Digital root of 48 × 32 =
  27. 27.Digital root of 68 × 19 =
  28. 28.Digital root of 51592 =
  29. 29.Digital root of 70 × 62 =
  30. 30.Digital root of 37651 =
  31. 31.Digital root of 84488 =
  32. 32.Digital root of 96208 =
  33. 33.Digital root of 45888 =
  34. 34.Digital root of 44352 =
  35. 35.Digital root of 99 × 13 =
  36. 36.Digital root of 69 × 26 =
  37. 37.Digital root of 64 × 31 =
  38. 38.Digital root of 26713 =
  39. 39.Digital root of 82 × 58 =
  40. 40.Digital root of 95 × 14 =

Answer key

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

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