Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 349 · 40 sums

The trick (Ekanyunena Purvena): Write the number with as many digits as there are nines (add zeros in front if needed). Left part: the number minus 1. Right part: “all from 9 and the last from 10” of the number. More digits than the nines (237 × 99)? Split off as many digits as there are nines (2 | 37): left = number − (front part + 1) = 234, right = complement of 37 = 63 → 23463.

1. 1.388 × 99 =
2. 2.1575 × 99 =
3. 3.3 × 9 =
4. 4.3 × 9 =
5. 5.866 × 999 =
6. 6.1564 × 99 =
7. 7.2 × 9 =
8. 8.61 × 9 =
9. 9.2 × 9 =
10. 10.967 × 999 =
11. 11.109 × 999 =
12. 12.58 × 999 =
13. 13.1405 × 99 =
14. 14.641 × 99 =
15. 15.12432 × 999 =
16. 16.2 × 9 =
17. 17.94 × 99 =
18. 18.78 × 99 =
19. 19.646 × 99 =
20. 20.9014 × 999 =
21. 21.26786 × 999 =
22. 22.4 × 9 =
23. 23.326 × 999 =
24. 24.3637 × 999 =
25. 25.5 × 9 =
26. 26.3 × 9 =
27. 27.51 × 9 =
28. 28.63 × 99 =
29. 29.264 × 999 =
30. 30.11 × 99 =
31. 31.2577 × 99 =
32. 32.181 × 999 =
33. 33.1947 × 99 =
34. 34.294 × 999 =
35. 35.71 × 99 =
36. 36.61 × 99 =
37. 37.7 × 9 =
38. 38.10103 × 999 =
39. 39.6 × 9 =
40. 40.687 × 999 =

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