Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 825 · 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. 1.2681 × 99 =
2. 2.41 × 99 =
3. 3.57 × 9 =
4. 4.3 × 9 =
5. 5.133 × 9 =
6. 6.8 × 9 =
7. 7.111 × 999 =
8. 8.73 × 999 =
9. 9.53 × 9 =
10. 10.4 × 9 =
11. 11.3 × 9 =
12. 12.22847 × 999 =
13. 13.5778 × 999 =
14. 14.2707 × 99 =
15. 15.899 × 999 =
16. 16.114 × 9 =
17. 17.41 × 99 =
18. 18.66 × 9 =
19. 19.834 × 999 =
20. 20.2 × 9 =
21. 21.1216 × 99 =
22. 22.189 × 999 =
23. 23.95 × 99 =
24. 24.5 × 99 =
25. 25.4 × 9 =
26. 26.2 × 9 =
27. 27.527 × 99 =
28. 28.6 × 9 =
29. 29.188 × 9 =
30. 30.905 × 999 =
31. 31.7 × 9 =
32. 32.15 × 99 =
33. 33.3 × 9 =
34. 34.49 × 999 =
35. 35.2543 × 99 =
36. 36.2 × 9 =
37. 37.5 × 9 =
38. 38.91 × 99 =
39. 39.1247 × 99 =
40. 40.23 × 99 =

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