Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 833 · 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. 1.82 × 99 =
2. 2.58 × 99 =
3. 3.878 × 999 =
4. 4.4 × 9 =
5. 5.1087 × 99 =
6. 6.159 × 9 =
7. 7.158 × 999 =
8. 8.21 × 99 =
9. 9.2 × 9 =
10. 10.3 × 9 =
11. 11.103 × 99 =
12. 12.118 × 999 =
13. 13.47 × 99 =
14. 14.2 × 99 =
15. 15.24925 × 999 =
16. 16.23 × 99 =
17. 17.665 × 999 =
18. 18.61 × 99 =
19. 19.74 × 99 =
20. 20.147 × 9 =
21. 21.4 × 9 =
22. 22.23475 × 999 =
23. 23.54 × 99 =
24. 24.794 × 999 =
25. 25.4 × 9 =
26. 26.8 × 9 =
27. 27.5 × 9 =
28. 28.719 × 999 =
29. 29.8 × 9 =
30. 30.94 × 99 =
31. 31.18 × 99 =
32. 32.17 × 99 =
33. 33.262 × 9 =
34. 34.2511 × 99 =
35. 35.8 × 9 =
36. 36.4 × 9 =
37. 37.28618 × 999 =
38. 38.4 × 9 =
39. 39.8 × 9 =
40. 40.4 × 9 =

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