Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 13 · 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. 1.62 × 99 =
2. 2.447 × 999 =
3. 3.75 × 99 =
4. 4.931 × 999 =
5. 5.24 × 9 =
6. 6.53 × 99 =
7. 7.74 × 99 =
8. 8.109 × 999 =
9. 9.35 × 99 =
10. 10.69 × 99 =
11. 11.24351 × 999 =
12. 12.98 × 99 =
13. 13.921 × 99 =
14. 14.19 × 99 =
15. 15.28 × 99 =
16. 16.5 × 9 =
17. 17.199 × 9 =
18. 18.263 × 9 =
19. 19.6 × 9 =
20. 20.2467 × 99 =
21. 21.2061 × 99 =
22. 22.10885 × 999 =
23. 23.71 × 9 =
24. 24.1776 × 99 =
25. 25.1558 × 99 =
26. 26.93 × 99 =
27. 27.297 × 999 =
28. 28.61 × 99 =
29. 29.1837 × 99 =
30. 30.2431 × 999 =
31. 31.5 × 9 =
32. 32.261 × 999 =
33. 33.7 × 9 =
34. 34.36 × 999 =
35. 35.81 × 99 =
36. 36.11 × 99 =
37. 37.364 × 999 =
38. 38.1281 × 99 =
39. 39.771 × 999 =
40. 40.7 × 9 =

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