Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 793 · 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. 1.454 × 999 =
2. 2.806 × 99 =
3. 3.4 × 9 =
4. 4.8 × 9 =
5. 5.5 × 9 =
6. 6.1287 × 99 =
7. 7.894 × 99 =
8. 8.181 × 9 =
9. 9.28399 × 999 =
10. 10.18 × 99 =
11. 11.55 × 999 =
12. 12.549 × 999 =
13. 13.2 × 9 =
14. 14.643 × 99 =
15. 15.11826 × 999 =
16. 16.166 × 999 =
17. 17.6 × 99 =
18. 18.3 × 9 =
19. 19.191 × 99 =
20. 20.11129 × 999 =
21. 21.129 × 999 =
22. 22.124 × 999 =
23. 23.71 × 999 =
24. 24.97 × 99 =
25. 25.8 × 9 =
26. 26.117 × 999 =
27. 27.3 × 9 =
28. 28.2 × 9 =
29. 29.92 × 999 =
30. 30.2471 × 99 =
31. 31.926 × 999 =
32. 32.15 × 99 =
33. 33.3 × 9 =
34. 34.5 × 9 =
35. 35.1326 × 99 =
36. 36.2 × 9 =
37. 37.79 × 99 =
38. 38.3 × 9 =
39. 39.619 × 999 =
40. 40.436 × 99 =

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