Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 325 · 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. 1.747 × 99 =
2. 2.787 × 999 =
3. 3.7 × 9 =
4. 4.2121 × 99 =
5. 5.261 × 9 =
6. 6.5 × 9 =
7. 7.25 × 99 =
8. 8.107 × 9 =
9. 9.4 × 9 =
10. 10.42 × 99 =
11. 11.8 × 9 =
12. 12.6423 × 999 =
13. 13.609 × 999 =
14. 14.2121 × 99 =
15. 15.96 × 99 =
16. 16.2319 × 99 =
17. 17.23 × 99 =
18. 18.91 × 99 =
19. 19.7 × 9 =
20. 20.147 × 999 =
21. 21.21392 × 999 =
22. 22.251 × 9 =
23. 23.46 × 99 =
24. 24.8 × 9 =
25. 25.2 × 9 =
26. 26.951 × 999 =
27. 27.8 × 9 =
28. 28.8 × 9 =
29. 29.226 × 9 =
30. 30.18209 × 999 =
31. 31.84 × 999 =
32. 32.5291 × 999 =
33. 33.6 × 9 =
34. 34.416 × 999 =
35. 35.5 × 9 =
36. 36.2 × 99 =
37. 37.787 × 99 =
38. 38.35 × 99 =
39. 39.16868 × 999 =
40. 40.4 × 9 =

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