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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 618 · 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 4937 =
  2. 2.Digital root of 25 × 34 =
  3. 3.Digital root of 87 × 33 =
  4. 4.Digital root of 98 × 90 =
  5. 5.Digital root of 63 × 36 =
  6. 6.Digital root of 24155 =
  7. 7.Digital root of 25 × 83 =
  8. 8.Digital root of 62831 =
  9. 9.Digital root of 42792 =
  10. 10.Digital root of 93392 =
  11. 11.Digital root of 31 × 78 =
  12. 12.Digital root of 49 × 60 =
  13. 13.Digital root of 75728 =
  14. 14.Digital root of 27 × 73 =
  15. 15.Digital root of 90208 =
  16. 16.Digital root of 43 × 85 =
  17. 17.Digital root of 29 × 37 =
  18. 18.Digital root of 42268 =
  19. 19.Digital root of 59 × 28 =
  20. 20.Digital root of 82710 =
  21. 21.Digital root of 91177 =
  22. 22.Digital root of 14 × 63 =
  23. 23.Digital root of 84 × 74 =
  24. 24.Digital root of 55638 =
  25. 25.Digital root of 83392 =
  26. 26.Digital root of 95 × 59 =
  27. 27.Digital root of 70350 =
  28. 28.Digital root of 45350 =
  29. 29.Digital root of 73 × 84 =
  30. 30.Digital root of 39413 =
  31. 31.Digital root of 49804 =
  32. 32.Digital root of 99382 =
  33. 33.Digital root of 94 × 88 =
  34. 34.Digital root of 80 × 36 =
  35. 35.Digital root of 92 × 39 =
  36. 36.Digital root of 58 × 62 =
  37. 37.Digital root of 99 × 68 =
  38. 38.Digital root of 66 × 65 =
  39. 39.Digital root of 18 × 76 =
  40. 40.Digital root of 56960 =

Answer key

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

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