Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 402 · 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 22 × 85 =
2. 2.Digital root of 77 × 90 =
3. 3.Digital root of 81018 =
4. 4.Digital root of 90 × 62 =
5. 5.Digital root of 36223 =
6. 6.Digital root of 97920 =
7. 7.Digital root of 44353 =
8. 8.Digital root of 13 × 18 =
9. 9.Digital root of 9329 =
10. 10.Digital root of 15 × 80 =
11. 11.Digital root of 46 × 83 =
12. 12.Digital root of 16398 =
13. 13.Digital root of 45 × 28 =
14. 14.Digital root of 91089 =
15. 15.Digital root of 49162 =
16. 16.Digital root of 61 × 79 =
17. 17.Digital root of 38748 =
18. 18.Digital root of 89378 =
19. 19.Digital root of 27 × 87 =
20. 20.Digital root of 4214 =
21. 21.Digital root of 81 × 29 =
22. 22.Digital root of 78 × 54 =
23. 23.Digital root of 63712 =
24. 24.Digital root of 31 × 73 =
25. 25.Digital root of 48689 =
26. 26.Digital root of 53 × 82 =
27. 27.Digital root of 43 × 22 =
28. 28.Digital root of 57669 =
29. 29.Digital root of 80 × 82 =
30. 30.Digital root of 37531 =
31. 31.Digital root of 39 × 34 =
32. 32.Digital root of 56214 =
33. 33.Digital root of 48741 =
34. 34.Digital root of 79290 =
35. 35.Digital root of 75 × 60 =
36. 36.Digital root of 3321 =
37. 37.Digital root of 13 × 31 =
38. 38.Digital root of 22048 =
39. 39.Digital root of 28 × 96 =
40. 40.Digital root of 2752 =

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