Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 779 · 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. 1.21 × 99 =
2. 2.394 × 999 =
3. 3.557 × 999 =
4. 4.97 × 9 =
5. 5.2 × 9 =
6. 6.23189 × 999 =
7. 7.87 × 99 =
8. 8.581 × 99 =
9. 9.18601 × 999 =
10. 10.4 × 9 =
11. 11.211 × 999 =
12. 12.476 × 99 =
13. 13.212 × 9 =
14. 14.3 × 9 =
15. 15.12 × 99 =
16. 16.41 × 99 =
17. 17.401 × 999 =
18. 18.59 × 99 =
19. 19.1446 × 99 =
20. 20.118 × 999 =
21. 21.5 × 99 =
22. 22.613 × 99 =
23. 23.79 × 999 =
24. 24.28743 × 999 =
25. 25.51 × 99 =
26. 26.8 × 9 =
27. 27.76 × 9 =
28. 28.13 × 99 =
29. 29.746 × 999 =
30. 30.552 × 999 =
31. 31.529 × 99 =
32. 32.11 × 99 =
33. 33.41 × 99 =
34. 34.74 × 99 =
35. 35.77 × 99 =
36. 36.1894 × 999 =
37. 37.529 × 999 =
38. 38.4 × 9 =
39. 39.14 × 99 =
40. 40.2109 × 999 =

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