Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 417 · 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 23 × 17 =
2. 2.Digital root of 34 × 83 =
3. 3.Digital root of 67839 =
4. 4.Digital root of 70 × 45 =
5. 5.Digital root of 12 × 20 =
6. 6.Digital root of 83 × 78 =
7. 7.Digital root of 78223 =
8. 8.Digital root of 72554 =
9. 9.Digital root of 84450 =
10. 10.Digital root of 33 × 14 =
11. 11.Digital root of 23 × 39 =
12. 12.Digital root of 54293 =
13. 13.Digital root of 15 × 86 =
14. 14.Digital root of 50 × 31 =
15. 15.Digital root of 53 × 84 =
16. 16.Digital root of 16575 =
17. 17.Digital root of 15 × 16 =
18. 18.Digital root of 54 × 60 =
19. 19.Digital root of 39 × 30 =
20. 20.Digital root of 91820 =
21. 21.Digital root of 71926 =
22. 22.Digital root of 47780 =
23. 23.Digital root of 63 × 51 =
24. 24.Digital root of 61 × 44 =
25. 25.Digital root of 65 × 20 =
26. 26.Digital root of 33 × 35 =
27. 27.Digital root of 42218 =
28. 28.Digital root of 91 × 44 =
29. 29.Digital root of 95 × 22 =
30. 30.Digital root of 33551 =
31. 31.Digital root of 24381 =
32. 32.Digital root of 33323 =
33. 33.Digital root of 4196 =
34. 34.Digital root of 13493 =
35. 35.Digital root of 62583 =
36. 36.Digital root of 35 × 40 =
37. 37.Digital root of 4904 =
38. 38.Digital root of 84 × 66 =
39. 39.Digital root of 17 × 41 =
40. 40.Digital root of 78531 =

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