Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 275 · 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. 1.69 × 999 =
2. 2.2623 × 99 =
3. 3.22 × 99 =
4. 4.77 × 999 =
5. 5.3566 × 999 =
6. 6.6 × 9 =
7. 7.28945 × 999 =
8. 8.24 × 99 =
9. 9.2 × 9 =
10. 10.1364 × 99 =
11. 11.1217 × 99 =
12. 12.138 × 9 =
13. 13.3 × 9 =
14. 14.15583 × 999 =
15. 15.83 × 99 =
16. 16.92 × 9 =
17. 17.87 × 99 =
18. 18.3 × 9 =
19. 19.173 × 999 =
20. 20.2121 × 99 =
21. 21.3 × 9 =
22. 22.618 × 999 =
23. 23.4 × 99 =
24. 24.79 × 99 =
25. 25.5 × 9 =
26. 26.7 × 9 =
27. 27.2587 × 99 =
28. 28.213 × 9 =
29. 29.1106 × 99 =
30. 30.8 × 9 =
31. 31.15306 × 999 =
32. 32.1938 × 99 =
33. 33.6 × 9 =
34. 34.3 × 9 =
35. 35.2 × 9 =
36. 36.785 × 999 =
37. 37.2438 × 99 =
38. 38.63 × 99 =
39. 39.11062 × 999 =
40. 40.2517 × 99 =

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