Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 93 · 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. 1.6866 × 999 =
2. 2.16431 × 999 =
3. 3.871 × 999 =
4. 4.12728 × 999 =
5. 5.202 × 9 =
6. 6.6 × 9 =
7. 7.6 × 9 =
8. 8.6 × 9 =
9. 9.11 × 99 =
10. 10.72 × 99 =
11. 11.3 × 9 =
12. 12.1224 × 99 =
13. 13.4 × 9 =
14. 14.722 × 99 =
15. 15.887 × 999 =
16. 16.2 × 9 =
17. 17.6 × 9 =
18. 18.98 × 99 =
19. 19.4 × 99 =
20. 20.808 × 999 =
21. 21.71 × 99 =
22. 22.185 × 9 =
23. 23.5 × 9 =
24. 24.94 × 99 =
25. 25.763 × 999 =
26. 26.71 × 99 =
27. 27.64 × 99 =
28. 28.132 × 9 =
29. 29.264 × 9 =
30. 30.321 × 999 =
31. 31.622 × 999 =
32. 32.51 × 99 =
33. 33.64 × 99 =
34. 34.257 × 9 =
35. 35.861 × 999 =
36. 36.954 × 999 =
37. 37.5 × 9 =
38. 38.8589 × 999 =
39. 39.7 × 9 =
40. 40.585 × 999 =

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