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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 55 · 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 87 × 19 =
  2. 2.Digital root of 88494 =
  3. 3.Digital root of 2567 =
  4. 4.Digital root of 35 × 43 =
  5. 5.Digital root of 48 × 68 =
  6. 6.Digital root of 57 × 20 =
  7. 7.Digital root of 37 × 23 =
  8. 8.Digital root of 76249 =
  9. 9.Digital root of 40 × 83 =
  10. 10.Digital root of 23622 =
  11. 11.Digital root of 36 × 54 =
  12. 12.Digital root of 40 × 98 =
  13. 13.Digital root of 52927 =
  14. 14.Digital root of 97 × 30 =
  15. 15.Digital root of 91202 =
  16. 16.Digital root of 36191 =
  17. 17.Digital root of 65439 =
  18. 18.Digital root of 31 × 17 =
  19. 19.Digital root of 15 × 17 =
  20. 20.Digital root of 81 × 59 =
  21. 21.Digital root of 89051 =
  22. 22.Digital root of 86756 =
  23. 23.Digital root of 95 × 51 =
  24. 24.Digital root of 61600 =
  25. 25.Digital root of 84611 =
  26. 26.Digital root of 82 × 62 =
  27. 27.Digital root of 82 × 64 =
  28. 28.Digital root of 74 × 40 =
  29. 29.Digital root of 71 × 22 =
  30. 30.Digital root of 99 × 88 =
  31. 31.Digital root of 73 × 77 =
  32. 32.Digital root of 73211 =
  33. 33.Digital root of 13 × 66 =
  34. 34.Digital root of 99 × 84 =
  35. 35.Digital root of 37 × 46 =
  36. 36.Digital root of 38 × 92 =
  37. 37.Digital root of 70 × 78 =
  38. 38.Digital root of 57 × 93 =
  39. 39.Digital root of 56605 =
  40. 40.Digital root of 16 × 16 =

Answer key

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

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