Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 477 · 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. 1.10831 × 999 =
2. 2.42 × 99 =
3. 3.15 × 99 =
4. 4.4445 × 999 =
5. 5.555 × 999 =
6. 6.61 × 9 =
7. 7.3 × 9 =
8. 8.4 × 9 =
9. 9.5696 × 999 =
10. 10.5 × 9 =
11. 11.2 × 9 =
12. 12.41 × 9 =
13. 13.1526 × 99 =
14. 14.93 × 99 =
15. 15.536 × 99 =
16. 16.157 × 9 =
17. 17.24898 × 999 =
18. 18.77 × 99 =
19. 19.1459 × 99 =
20. 20.398 × 999 =
21. 21.48 × 99 =
22. 22.29 × 99 =
23. 23.4 × 9 =
24. 24.21318 × 999 =
25. 25.12 × 99 =
26. 26.604 × 999 =
27. 27.158 × 9 =
28. 28.1961 × 99 =
29. 29.224 × 9 =
30. 30.151 × 999 =
31. 31.656 × 999 =
32. 32.83 × 99 =
33. 33.16892 × 999 =
34. 34.942 × 999 =
35. 35.2 × 9 =
36. 36.2 × 9 =
37. 37.31 × 99 =
38. 38.28 × 99 =
39. 39.5 × 9 =
40. 40.4 × 9 =

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