Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 24 · 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. 1.29 × 99 =
2. 2.97 × 99 =
3. 3.4 × 9 =
4. 4.268 × 9 =
5. 5.15 × 99 =
6. 6.405 × 999 =
7. 7.72 × 99 =
8. 8.4 × 9 =
9. 9.6 × 9 =
10. 10.3 × 9 =
11. 11.25 × 99 =
12. 12.14 × 9 =
13. 13.1574 × 99 =
14. 14.5 × 9 =
15. 15.6 × 9 =
16. 16.52 × 99 =
17. 17.7 × 9 =
18. 18.3 × 9 =
19. 19.7667 × 999 =
20. 20.2 × 9 =
21. 21.39 × 99 =
22. 22.76 × 999 =
23. 23.62 × 99 =
24. 24.3 × 9 =
25. 25.115 × 9 =
26. 26.48 × 99 =
27. 27.26 × 999 =
28. 28.8 × 9 =
29. 29.26 × 99 =
30. 30.2121 × 99 =
31. 31.3 × 9 =
32. 32.27 × 9 =
33. 33.251 × 9 =
34. 34.42 × 99 =
35. 35.429 × 999 =
36. 36.2335 × 99 =
37. 37.2593 × 99 =
38. 38.526 × 999 =
39. 39.8122 × 999 =
40. 40.317 × 999 =

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