Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 389 · 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. 1.221 × 9 =
2. 2.4 × 9 =
3. 3.35 × 99 =
4. 4.481 × 99 =
5. 5.84 × 99 =
6. 6.4776 × 999 =
7. 7.81 × 99 =
8. 8.271 × 999 =
9. 9.498 × 999 =
10. 10.22989 × 999 =
11. 11.312 × 999 =
12. 12.671 × 999 =
13. 13.4 × 9 =
14. 14.538 × 99 =
15. 15.61 × 99 =
16. 16.3 × 9 =
17. 17.44 × 99 =
18. 18.67 × 99 =
19. 19.39 × 99 =
20. 20.418 × 999 =
21. 21.2 × 9 =
22. 22.39 × 99 =
23. 23.514 × 999 =
24. 24.18331 × 999 =
25. 25.739 × 999 =
26. 26.25251 × 999 =
27. 27.13 × 99 =
28. 28.93 × 9 =
29. 29.85 × 99 =
30. 30.42 × 99 =
31. 31.87 × 99 =
32. 32.2 × 9 =
33. 33.49 × 99 =
34. 34.221 × 9 =
35. 35.52 × 9 =
36. 36.2 × 9 =
37. 37.5 × 9 =
38. 38.105 × 9 =
39. 39.13 × 99 =
40. 40.25 × 9 =

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