Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 369 · 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. 1.445 × 99 =
2. 2.5 × 9 =
3. 3.2909 × 999 =
4. 4.3 × 99 =
5. 5.7 × 99 =
6. 6.5 × 9 =
7. 7.5 × 9 =
8. 8.69 × 9 =
9. 9.93 × 99 =
10. 10.392 × 999 =
11. 11.3 × 9 =
12. 12.34 × 99 =
13. 13.24106 × 999 =
14. 14.5 × 9 =
15. 15.212 × 9 =
16. 16.3 × 9 =
17. 17.3 × 9 =
18. 18.3 × 9 =
19. 19.7 × 9 =
20. 20.25 × 99 =
21. 21.26576 × 999 =
22. 22.13 × 99 =
23. 23.22 × 999 =
24. 24.4341 × 999 =
25. 25.8 × 9 =
26. 26.13871 × 999 =
27. 27.18698 × 999 =
28. 28.7 × 9 =
29. 29.143 × 9 =
30. 30.6 × 99 =
31. 31.957 × 999 =
32. 32.51 × 99 =
33. 33.307 × 999 =
34. 34.5 × 9 =
35. 35.6 × 9 =
36. 36.2 × 9 =
37. 37.6 × 999 =
38. 38.93 × 9 =
39. 39.844 × 99 =
40. 40.294 × 999 =

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