Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 987 · 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. 1.12 × 99 =
2. 2.45 × 99 =
3. 3.97 × 99 =
4. 4.192 × 99 =
5. 5.92 × 9 =
6. 6.5 × 9 =
7. 7.873 × 999 =
8. 8.3 × 99 =
9. 9.14 × 99 =
10. 10.131 × 999 =
11. 11.2967 × 99 =
12. 12.807 × 999 =
13. 13.7 × 9 =
14. 14.26042 × 999 =
15. 15.18 × 999 =
16. 16.81 × 99 =
17. 17.111 × 9 =
18. 18.294 × 999 =
19. 19.25 × 99 =
20. 20.33 × 999 =
21. 21.28 × 99 =
22. 22.214 × 999 =
23. 23.38 × 99 =
24. 24.454 × 999 =
25. 25.142 × 999 =
26. 26.63 × 99 =
27. 27.5 × 99 =
28. 28.5 × 9 =
29. 29.51 × 99 =
30. 30.16 × 99 =
31. 31.168 × 9 =
32. 32.3961 × 999 =
33. 33.3 × 9 =
34. 34.2 × 9 =
35. 35.96 × 99 =
36. 36.162 × 9 =
37. 37.41 × 99 =
38. 38.82 × 99 =
39. 39.6 × 9 =
40. 40.986 × 99 =

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