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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 715 · 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 37 × 56 =
  2. 2.Digital root of 52852 =
  3. 3.Digital root of 48 × 19 =
  4. 4.Digital root of 23 × 82 =
  5. 5.Digital root of 22 × 38 =
  6. 6.Digital root of 32 × 99 =
  7. 7.Digital root of 21 × 94 =
  8. 8.Digital root of 53888 =
  9. 9.Digital root of 60726 =
  10. 10.Digital root of 93 × 31 =
  11. 11.Digital root of 29 × 25 =
  12. 12.Digital root of 16 × 76 =
  13. 13.Digital root of 61 × 50 =
  14. 14.Digital root of 76 × 67 =
  15. 15.Digital root of 45 × 87 =
  16. 16.Digital root of 66 × 34 =
  17. 17.Digital root of 20 × 12 =
  18. 18.Digital root of 19 × 79 =
  19. 19.Digital root of 76207 =
  20. 20.Digital root of 70230 =
  21. 21.Digital root of 65620 =
  22. 22.Digital root of 86941 =
  23. 23.Digital root of 4524 =
  24. 24.Digital root of 88 × 39 =
  25. 25.Digital root of 26443 =
  26. 26.Digital root of 9317 =
  27. 27.Digital root of 43 × 29 =
  28. 28.Digital root of 45563 =
  29. 29.Digital root of 82 × 98 =
  30. 30.Digital root of 62467 =
  31. 31.Digital root of 47565 =
  32. 32.Digital root of 95 × 41 =
  33. 33.Digital root of 92339 =
  34. 34.Digital root of 87008 =
  35. 35.Digital root of 97 × 75 =
  36. 36.Digital root of 64 × 97 =
  37. 37.Digital root of 9475 =
  38. 38.Digital root of 30 × 25 =
  39. 39.Digital root of 98668 =
  40. 40.Digital root of 35 × 25 =

Answer key

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

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