Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 624 · 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. 1.2159 × 99 =
2. 2.6 × 99 =
3. 3.19 × 99 =
4. 4.236 × 999 =
5. 5.981 × 999 =
6. 6.8572 × 999 =
7. 7.9 × 99 =
8. 8.41 × 9 =
9. 9.3 × 9 =
10. 10.26 × 99 =
11. 11.4 × 99 =
12. 12.83 × 99 =
13. 13.7598 × 999 =
14. 14.6741 × 999 =
15. 15.8 × 9 =
16. 16.4 × 9 =
17. 17.8 × 9 =
18. 18.2 × 9 =
19. 19.372 × 999 =
20. 20.738 × 999 =
21. 21.2668 × 99 =
22. 22.9931 × 999 =
23. 23.628 × 999 =
24. 24.857 × 999 =
25. 25.5 × 9 =
26. 26.5 × 99 =
27. 27.2629 × 999 =
28. 28.5 × 9 =
29. 29.448 × 999 =
30. 30.29151 × 999 =
31. 31.945 × 999 =
32. 32.279 × 999 =
33. 33.873 × 999 =
34. 34.24512 × 999 =
35. 35.982 × 99 =
36. 36.46 × 99 =
37. 37.51 × 99 =
38. 38.5 × 9 =
39. 39.51 × 9 =
40. 40.632 × 999 =

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