Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 291 · 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. 1.96 × 99 =
2. 2.5 × 9 =
3. 3.2 × 9 =
4. 4.6 × 9 =
5. 5.18 × 99 =
6. 6.5 × 999 =
7. 7.7 × 9 =
8. 8.38 × 99 =
9. 9.17 × 99 =
10. 10.1155 × 99 =
11. 11.16703 × 999 =
12. 12.65 × 99 =
13. 13.7 × 9 =
14. 14.3 × 9 =
15. 15.55 × 99 =
16. 16.82 × 999 =
17. 17.6 × 9 =
18. 18.18 × 99 =
19. 19.2 × 99 =
20. 20.4 × 9 =
21. 21.23 × 99 =
22. 22.4 × 9 =
23. 23.8022 × 999 =
24. 24.8 × 9 =
25. 25.715 × 999 =
26. 26.1307 × 99 =
27. 27.4 × 9 =
28. 28.69 × 99 =
29. 29.8 × 9 =
30. 30.509 × 999 =
31. 31.5 × 9 =
32. 32.51 × 99 =
33. 33.251 × 9 =
34. 34.266 × 9 =
35. 35.79 × 99 =
36. 36.241 × 9 =
37. 37.319 × 999 =
38. 38.3 × 9 =
39. 39.153 × 999 =
40. 40.544 × 999 =

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