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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 685 · 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 31 × 48 =
  2. 2.Digital root of 91 × 52 =
  3. 3.Digital root of 35203 =
  4. 4.Digital root of 1800 =
  5. 5.Digital root of 27052 =
  6. 6.Digital root of 67 × 95 =
  7. 7.Digital root of 95660 =
  8. 8.Digital root of 41 × 79 =
  9. 9.Digital root of 99 × 68 =
  10. 10.Digital root of 43255 =
  11. 11.Digital root of 65 × 42 =
  12. 12.Digital root of 95 × 23 =
  13. 13.Digital root of 95 × 86 =
  14. 14.Digital root of 19841 =
  15. 15.Digital root of 75 × 20 =
  16. 16.Digital root of 38 × 81 =
  17. 17.Digital root of 36180 =
  18. 18.Digital root of 11606 =
  19. 19.Digital root of 25751 =
  20. 20.Digital root of 24762 =
  21. 21.Digital root of 18220 =
  22. 22.Digital root of 1187 =
  23. 23.Digital root of 72088 =
  24. 24.Digital root of 84403 =
  25. 25.Digital root of 10217 =
  26. 26.Digital root of 60031 =
  27. 27.Digital root of 64 × 72 =
  28. 28.Digital root of 38 × 45 =
  29. 29.Digital root of 22 × 18 =
  30. 30.Digital root of 67 × 71 =
  31. 31.Digital root of 94 × 69 =
  32. 32.Digital root of 49 × 76 =
  33. 33.Digital root of 62740 =
  34. 34.Digital root of 97 × 47 =
  35. 35.Digital root of 98426 =
  36. 36.Digital root of 42397 =
  37. 37.Digital root of 9623 =
  38. 38.Digital root of 53627 =
  39. 39.Digital root of 15 × 43 =
  40. 40.Digital root of 5837 =

Answer key

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

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