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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 542 · 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 35 × 77 =
  2. 2.Digital root of 56116 =
  3. 3.Digital root of 44 × 81 =
  4. 4.Digital root of 51365 =
  5. 5.Digital root of 28886 =
  6. 6.Digital root of 68 × 63 =
  7. 7.Digital root of 34327 =
  8. 8.Digital root of 63958 =
  9. 9.Digital root of 65 × 28 =
  10. 10.Digital root of 69 × 31 =
  11. 11.Digital root of 96573 =
  12. 12.Digital root of 95030 =
  13. 13.Digital root of 44545 =
  14. 14.Digital root of 93766 =
  15. 15.Digital root of 60 × 13 =
  16. 16.Digital root of 45279 =
  17. 17.Digital root of 39655 =
  18. 18.Digital root of 49319 =
  19. 19.Digital root of 81 × 80 =
  20. 20.Digital root of 69394 =
  21. 21.Digital root of 80 × 90 =
  22. 22.Digital root of 47 × 38 =
  23. 23.Digital root of 13400 =
  24. 24.Digital root of 81 × 96 =
  25. 25.Digital root of 26436 =
  26. 26.Digital root of 13429 =
  27. 27.Digital root of 76 × 79 =
  28. 28.Digital root of 76 × 97 =
  29. 29.Digital root of 20 × 96 =
  30. 30.Digital root of 4597 =
  31. 31.Digital root of 28275 =
  32. 32.Digital root of 13 × 68 =
  33. 33.Digital root of 78 × 25 =
  34. 34.Digital root of 12819 =
  35. 35.Digital root of 80983 =
  36. 36.Digital root of 81 × 17 =
  37. 37.Digital root of 88 × 60 =
  38. 38.Digital root of 76590 =
  39. 39.Digital root of 84806 =
  40. 40.Digital root of 39495 =

Answer key

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

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