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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 170 · 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 31942 =
  2. 2.Digital root of 60 × 88 =
  3. 3.Digital root of 26 × 87 =
  4. 4.Digital root of 99845 =
  5. 5.Digital root of 28668 =
  6. 6.Digital root of 31439 =
  7. 7.Digital root of 58 × 72 =
  8. 8.Digital root of 28 × 21 =
  9. 9.Digital root of 41298 =
  10. 10.Digital root of 65 × 88 =
  11. 11.Digital root of 26359 =
  12. 12.Digital root of 56 × 17 =
  13. 13.Digital root of 8952 =
  14. 14.Digital root of 21843 =
  15. 15.Digital root of 46388 =
  16. 16.Digital root of 64 × 92 =
  17. 17.Digital root of 18188 =
  18. 18.Digital root of 13237 =
  19. 19.Digital root of 35 × 45 =
  20. 20.Digital root of 24 × 33 =
  21. 21.Digital root of 45075 =
  22. 22.Digital root of 29 × 98 =
  23. 23.Digital root of 51 × 87 =
  24. 24.Digital root of 59 × 58 =
  25. 25.Digital root of 28 × 32 =
  26. 26.Digital root of 87 × 17 =
  27. 27.Digital root of 94 × 46 =
  28. 28.Digital root of 20 × 12 =
  29. 29.Digital root of 29 × 19 =
  30. 30.Digital root of 31601 =
  31. 31.Digital root of 64 × 62 =
  32. 32.Digital root of 86 × 32 =
  33. 33.Digital root of 90299 =
  34. 34.Digital root of 34 × 33 =
  35. 35.Digital root of 72980 =
  36. 36.Digital root of 28 × 37 =
  37. 37.Digital root of 58219 =
  38. 38.Digital root of 14840 =
  39. 39.Digital root of 39016 =
  40. 40.Digital root of 13882 =

Answer key

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

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