Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 17 · 40 sums

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.

1. 1.Digital root of 79 × 99 =
2. 2.Digital root of 29 × 90 =
3. 3.Digital root of 34074 =
4. 4.Digital root of 64 × 17 =
5. 5.Digital root of 75 × 67 =
6. 6.Digital root of 16 × 97 =
7. 7.Digital root of 28953 =
8. 8.Digital root of 77816 =
9. 9.Digital root of 22467 =
10. 10.Digital root of 83085 =
11. 11.Digital root of 92 × 33 =
12. 12.Digital root of 58 × 82 =
13. 13.Digital root of 58553 =
14. 14.Digital root of 40 × 75 =
15. 15.Digital root of 56 × 75 =
16. 16.Digital root of 75 × 82 =
17. 17.Digital root of 29924 =
18. 18.Digital root of 20 × 56 =
19. 19.Digital root of 39 × 25 =
20. 20.Digital root of 27 × 13 =
21. 21.Digital root of 37 × 98 =
22. 22.Digital root of 2974 =
23. 23.Digital root of 91 × 84 =
24. 24.Digital root of 13669 =
25. 25.Digital root of 17 × 60 =
26. 26.Digital root of 63 × 66 =
27. 27.Digital root of 10751 =
28. 28.Digital root of 72271 =
29. 29.Digital root of 51739 =
30. 30.Digital root of 80667 =
31. 31.Digital root of 75626 =
32. 32.Digital root of 82917 =
33. 33.Digital root of 99404 =
34. 34.Digital root of 94413 =
35. 35.Digital root of 16537 =
36. 36.Digital root of 36905 =
37. 37.Digital root of 77683 =
38. 38.Digital root of 44 × 75 =
39. 39.Digital root of 7505 =
40. 40.Digital root of 78 × 40 =

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