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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 554 · 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 14 × 93 =
  2. 2.Digital root of 19643 =
  3. 3.Digital root of 68280 =
  4. 4.Digital root of 69015 =
  5. 5.Digital root of 74 × 12 =
  6. 6.Digital root of 34 × 75 =
  7. 7.Digital root of 30 × 58 =
  8. 8.Digital root of 56 × 44 =
  9. 9.Digital root of 28290 =
  10. 10.Digital root of 65 × 20 =
  11. 11.Digital root of 14463 =
  12. 12.Digital root of 48 × 46 =
  13. 13.Digital root of 2123 =
  14. 14.Digital root of 28415 =
  15. 15.Digital root of 85672 =
  16. 16.Digital root of 35 × 72 =
  17. 17.Digital root of 26 × 65 =
  18. 18.Digital root of 57 × 26 =
  19. 19.Digital root of 91482 =
  20. 20.Digital root of 18169 =
  21. 21.Digital root of 88 × 15 =
  22. 22.Digital root of 53094 =
  23. 23.Digital root of 80489 =
  24. 24.Digital root of 47 × 89 =
  25. 25.Digital root of 86 × 22 =
  26. 26.Digital root of 16 × 88 =
  27. 27.Digital root of 62 × 54 =
  28. 28.Digital root of 15 × 83 =
  29. 29.Digital root of 35432 =
  30. 30.Digital root of 17568 =
  31. 31.Digital root of 99 × 26 =
  32. 32.Digital root of 41990 =
  33. 33.Digital root of 46 × 17 =
  34. 34.Digital root of 32 × 67 =
  35. 35.Digital root of 13 × 22 =
  36. 36.Digital root of 91 × 37 =
  37. 37.Digital root of 41416 =
  38. 38.Digital root of 21932 =
  39. 39.Digital root of 17 × 14 =
  40. 40.Digital root of 17454 =

Answer key

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

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