Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 555 · 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. 1.7 × 9 =
2. 2.257 × 9 =
3. 3.595 × 999 =
4. 4.5 × 9 =
5. 5.1975 × 99 =
6. 6.3 × 9 =
7. 7.2264 × 99 =
8. 8.14183 × 999 =
9. 9.81 × 99 =
10. 10.969 × 999 =
11. 11.28825 × 999 =
12. 12.7 × 9 =
13. 13.35 × 99 =
14. 14.2 × 9 =
15. 15.67 × 99 =
16. 16.194 × 999 =
17. 17.13 × 9 =
18. 18.7 × 9 =
19. 19.28868 × 999 =
20. 20.8 × 9 =
21. 21.2455 × 999 =
22. 22.6 × 9 =
23. 23.493 × 999 =
24. 24.305 × 999 =
25. 25.94 × 99 =
26. 26.2 × 9 =
27. 27.435 × 999 =
28. 28.729 × 999 =
29. 29.2342 × 99 =
30. 30.975 × 99 =
31. 31.2 × 99 =
32. 32.3 × 9 =
33. 33.44 × 99 =
34. 34.2 × 9 =
35. 35.17 × 99 =
36. 36.637 × 999 =
37. 37.21 × 99 =
38. 38.832 × 999 =
39. 39.4 × 9 =
40. 40.847 × 99 =

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