Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 123 · 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. 1.121 × 999 =
2. 2.3 × 9 =
3. 3.28433 × 999 =
4. 4.62 × 999 =
5. 5.4 × 9 =
6. 6.24851 × 999 =
7. 7.28062 × 999 =
8. 8.5 × 99 =
9. 9.81 × 99 =
10. 10.383 × 999 =
11. 11.395 × 999 =
12. 12.15 × 99 =
13. 13.15 × 99 =
14. 14.561 × 999 =
15. 15.95 × 99 =
16. 16.5 × 9 =
17. 17.853 × 999 =
18. 18.7 × 9 =
19. 19.7621 × 999 =
20. 20.1154 × 99 =
21. 21.212 × 999 =
22. 22.68 × 99 =
23. 23.196 × 999 =
24. 24.8 × 99 =
25. 25.2788 × 99 =
26. 26.46 × 99 =
27. 27.154 × 99 =
28. 28.911 × 999 =
29. 29.9791 × 999 =
30. 30.1148 × 99 =
31. 31.44 × 99 =
32. 32.337 × 999 =
33. 33.16 × 99 =
34. 34.961 × 999 =
35. 35.19 × 99 =
36. 36.21 × 9 =
37. 37.413 × 999 =
38. 38.68 × 99 =
39. 39.8 × 9 =
40. 40.2921 × 99 =

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