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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 799 · 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 33089 =
  2. 2.Digital root of 47 × 94 =
  3. 3.Digital root of 47 × 50 =
  4. 4.Digital root of 61 × 36 =
  5. 5.Digital root of 7408 =
  6. 6.Digital root of 31436 =
  7. 7.Digital root of 89 × 69 =
  8. 8.Digital root of 47735 =
  9. 9.Digital root of 69 × 73 =
  10. 10.Digital root of 78 × 18 =
  11. 11.Digital root of 92 × 49 =
  12. 12.Digital root of 64 × 94 =
  13. 13.Digital root of 92 × 82 =
  14. 14.Digital root of 78202 =
  15. 15.Digital root of 26494 =
  16. 16.Digital root of 67 × 52 =
  17. 17.Digital root of 94 × 74 =
  18. 18.Digital root of 92 × 95 =
  19. 19.Digital root of 41 × 46 =
  20. 20.Digital root of 37 × 99 =
  21. 21.Digital root of 90 × 35 =
  22. 22.Digital root of 96404 =
  23. 23.Digital root of 42 × 19 =
  24. 24.Digital root of 51466 =
  25. 25.Digital root of 9578 =
  26. 26.Digital root of 40 × 99 =
  27. 27.Digital root of 48 × 73 =
  28. 28.Digital root of 67 × 43 =
  29. 29.Digital root of 26180 =
  30. 30.Digital root of 8860 =
  31. 31.Digital root of 6003 =
  32. 32.Digital root of 96205 =
  33. 33.Digital root of 64 × 67 =
  34. 34.Digital root of 23735 =
  35. 35.Digital root of 60 × 16 =
  36. 36.Digital root of 40 × 19 =
  37. 37.Digital root of 71 × 73 =
  38. 38.Digital root of 717 =
  39. 39.Digital root of 34730 =
  40. 40.Digital root of 35 × 43 =

Answer key

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

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