Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 484 · 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. 1.75 × 99 =
2. 2.25791 × 999 =
3. 3.54 × 9 =
4. 4.79 × 99 =
5. 5.657 × 999 =
6. 6.85 × 99 =
7. 7.88 × 99 =
8. 8.194 × 9 =
9. 9.43 × 99 =
10. 10.1615 × 99 =
11. 11.92 × 99 =
12. 12.121 × 999 =
13. 13.18887 × 999 =
14. 14.187 × 9 =
15. 15.7908 × 999 =
16. 16.4 × 99 =
17. 17.96 × 999 =
18. 18.431 × 999 =
19. 19.3 × 9 =
20. 20.161 × 9 =
21. 21.258 × 9 =
22. 22.3 × 9 =
23. 23.173 × 9 =
24. 24.933 × 999 =
25. 25.1819 × 99 =
26. 26.32 × 99 =
27. 27.811 × 999 =
28. 28.449 × 999 =
29. 29.215 × 999 =
30. 30.2806 × 99 =
31. 31.5 × 9 =
32. 32.21 × 99 =
33. 33.831 × 999 =
34. 34.496 × 999 =
35. 35.238 × 9 =
36. 36.2 × 9 =
37. 37.134 × 999 =
38. 38.936 × 99 =
39. 39.163 × 9 =
40. 40.7 × 9 =

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