Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 648 · 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. 1.32 × 99 =
2. 2.7 × 9 =
3. 3.64 × 99 =
4. 4.2 × 9 =
5. 5.81 × 9 =
6. 6.54 × 99 =
7. 7.273 × 99 =
8. 8.2267 × 99 =
9. 9.5 × 9 =
10. 10.3 × 9 =
11. 11.27311 × 999 =
12. 12.13 × 99 =
13. 13.28711 × 999 =
14. 14.28 × 999 =
15. 15.232 × 9 =
16. 16.7 × 9 =
17. 17.21 × 99 =
18. 18.4 × 9 =
19. 19.642 × 999 =
20. 20.19699 × 999 =
21. 21.91 × 99 =
22. 22.216 × 999 =
23. 23.72 × 99 =
24. 24.51 × 99 =
25. 25.341 × 999 =
26. 26.3 × 9 =
27. 27.894 × 999 =
28. 28.3 × 9 =
29. 29.64 × 99 =
30. 30.22342 × 999 =
31. 31.24 × 99 =
32. 32.5 × 9 =
33. 33.696 × 999 =
34. 34.2947 × 99 =
35. 35.41 × 99 =
36. 36.285 × 999 =
37. 37.941 × 999 =
38. 38.634 × 999 =
39. 39.15 × 99 =
40. 40.18806 × 999 =

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