Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 674 · 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. 1.209 × 999 =
2. 2.3 × 9 =
3. 3.10251 × 999 =
4. 4.2132 × 99 =
5. 5.23477 × 999 =
6. 6.15 × 999 =
7. 7.91 × 99 =
8. 8.6007 × 999 =
9. 9.31 × 99 =
10. 10.3 × 9 =
11. 11.614 × 999 =
12. 12.29907 × 999 =
13. 13.41 × 99 =
14. 14.51 × 9 =
15. 15.54 × 99 =
16. 16.1416 × 99 =
17. 17.361 × 999 =
18. 18.1938 × 99 =
19. 19.253 × 9 =
20. 20.3 × 9 =
21. 21.3 × 99 =
22. 22.9983 × 999 =
23. 23.2 × 9 =
24. 24.2 × 9 =
25. 25.84 × 999 =
26. 26.667 × 999 =
27. 27.6 × 99 =
28. 28.81 × 99 =
29. 29.2 × 9 =
30. 30.607 × 999 =
31. 31.20851 × 999 =
32. 32.6 × 9 =
33. 33.85 × 99 =
34. 34.91 × 99 =
35. 35.1109 × 99 =
36. 36.23 × 99 =
37. 37.5 × 9 =
38. 38.5 × 9 =
39. 39.271 × 999 =
40. 40.215 × 999 =

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