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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 663 · 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 69190 =
  2. 2.Digital root of 24 × 25 =
  3. 3.Digital root of 12 × 13 =
  4. 4.Digital root of 41073 =
  5. 5.Digital root of 23011 =
  6. 6.Digital root of 66 × 39 =
  7. 7.Digital root of 98 × 61 =
  8. 8.Digital root of 31 × 30 =
  9. 9.Digital root of 59863 =
  10. 10.Digital root of 79 × 19 =
  11. 11.Digital root of 59140 =
  12. 12.Digital root of 70267 =
  13. 13.Digital root of 9107 =
  14. 14.Digital root of 21 × 13 =
  15. 15.Digital root of 55 × 34 =
  16. 16.Digital root of 88 × 53 =
  17. 17.Digital root of 41 × 76 =
  18. 18.Digital root of 98 × 13 =
  19. 19.Digital root of 93811 =
  20. 20.Digital root of 58164 =
  21. 21.Digital root of 65122 =
  22. 22.Digital root of 96 × 64 =
  23. 23.Digital root of 94466 =
  24. 24.Digital root of 21 × 60 =
  25. 25.Digital root of 82 × 91 =
  26. 26.Digital root of 17 × 61 =
  27. 27.Digital root of 28 × 25 =
  28. 28.Digital root of 90686 =
  29. 29.Digital root of 13844 =
  30. 30.Digital root of 49 × 57 =
  31. 31.Digital root of 4006 =
  32. 32.Digital root of 80 × 41 =
  33. 33.Digital root of 93 × 88 =
  34. 34.Digital root of 70 × 89 =
  35. 35.Digital root of 20 × 33 =
  36. 36.Digital root of 43 × 85 =
  37. 37.Digital root of 17537 =
  38. 38.Digital root of 24409 =
  39. 39.Digital root of 54961 =
  40. 40.Digital root of 98 × 12 =

Answer key

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

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