Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 66 · 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. 1.5159 × 999 =
2. 2.3 × 9 =
3. 3.5 × 99 =
4. 4.41 × 99 =
5. 5.8 × 9 =
6. 6.193 × 999 =
7. 7.215 × 999 =
8. 8.6 × 9 =
9. 9.41 × 99 =
10. 10.4 × 9 =
11. 11.583 × 999 =
12. 12.62 × 99 =
13. 13.84 × 99 =
14. 14.18 × 99 =
15. 15.13 × 99 =
16. 16.2916 × 99 =
17. 17.55 × 9 =
18. 18.208 × 9 =
19. 19.3 × 9 =
20. 20.139 × 9 =
21. 21.51 × 99 =
22. 22.96 × 99 =
23. 23.54 × 99 =
24. 24.2156 × 999 =
25. 25.932 × 999 =
26. 26.2 × 9 =
27. 27.251 × 9 =
28. 28.3 × 9 =
29. 29.2132 × 99 =
30. 30.1309 × 99 =
31. 31.7 × 9 =
32. 32.17097 × 999 =
33. 33.2 × 9 =
34. 34.14 × 99 =
35. 35.3 × 9 =
36. 36.251 × 9 =
37. 37.42 × 9 =
38. 38.245 × 9 =
39. 39.39 × 99 =
40. 40.28993 × 999 =

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