Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 422 · 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. 1.72 × 99 =
2. 2.52 × 99 =
3. 3.8 × 9 =
4. 4.695 × 99 =
5. 5.54 × 9 =
6. 6.423 × 99 =
7. 7.9 × 99 =
8. 8.5298 × 999 =
9. 9.6 × 9 =
10. 10.257 × 9 =
11. 11.8 × 9 =
12. 12.74 × 99 =
13. 13.5 × 9 =
14. 14.1325 × 99 =
15. 15.2 × 9 =
16. 16.13 × 999 =
17. 17.58 × 99 =
18. 18.95 × 99 =
19. 19.616 × 999 =
20. 20.5 × 9 =
21. 21.259 × 99 =
22. 22.71 × 9 =
23. 23.16 × 99 =
24. 24.77 × 99 =
25. 25.16 × 9 =
26. 26.984 × 99 =
27. 27.239 × 9 =
28. 28.579 × 999 =
29. 29.8 × 9 =
30. 30.32 × 99 =
31. 31.2 × 9 =
32. 32.6 × 9 =
33. 33.343 × 999 =
34. 34.71 × 99 =
35. 35.12 × 99 =
36. 36.18 × 99 =
37. 37.844 × 999 =
38. 38.58 × 9 =
39. 39.5614 × 999 =
40. 40.6 × 9 =

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