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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 147 · 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 14389 =
  2. 2.Digital root of 50722 =
  3. 3.Digital root of 34 × 18 =
  4. 4.Digital root of 95564 =
  5. 5.Digital root of 93889 =
  6. 6.Digital root of 65 × 36 =
  7. 7.Digital root of 88 × 98 =
  8. 8.Digital root of 75 × 24 =
  9. 9.Digital root of 36 × 35 =
  10. 10.Digital root of 22 × 36 =
  11. 11.Digital root of 53 × 68 =
  12. 12.Digital root of 84 × 49 =
  13. 13.Digital root of 34473 =
  14. 14.Digital root of 69084 =
  15. 15.Digital root of 54 × 46 =
  16. 16.Digital root of 23 × 69 =
  17. 17.Digital root of 554 =
  18. 18.Digital root of 38672 =
  19. 19.Digital root of 14088 =
  20. 20.Digital root of 72 × 59 =
  21. 21.Digital root of 25 × 93 =
  22. 22.Digital root of 87 × 81 =
  23. 23.Digital root of 48 × 43 =
  24. 24.Digital root of 79 × 39 =
  25. 25.Digital root of 18 × 96 =
  26. 26.Digital root of 52 × 27 =
  27. 27.Digital root of 40489 =
  28. 28.Digital root of 13 × 43 =
  29. 29.Digital root of 74 × 96 =
  30. 30.Digital root of 29 × 65 =
  31. 31.Digital root of 93 × 16 =
  32. 32.Digital root of 96 × 44 =
  33. 33.Digital root of 95 × 92 =
  34. 34.Digital root of 94280 =
  35. 35.Digital root of 82 × 26 =
  36. 36.Digital root of 64 × 31 =
  37. 37.Digital root of 21647 =
  38. 38.Digital root of 35160 =
  39. 39.Digital root of 56032 =
  40. 40.Digital root of 45377 =

Answer key

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

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