Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 496 · 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. 1.1151 × 99 =
2. 2.152 × 999 =
3. 3.3 × 9 =
4. 4.246 × 999 =
5. 5.633 × 999 =
6. 6.29 × 99 =
7. 7.2 × 9 =
8. 8.4 × 9 =
9. 9.8 × 9 =
10. 10.8 × 9 =
11. 11.61 × 99 =
12. 12.71 × 9 =
13. 13.61 × 99 =
14. 14.59 × 999 =
15. 15.114 × 9 =
16. 16.9 × 99 =
17. 17.8 × 9 =
18. 18.2 × 99 =
19. 19.2 × 9 =
20. 20.2 × 9 =
21. 21.5 × 9 =
22. 22.268 × 9 =
23. 23.523 × 999 =
24. 24.226 × 9 =
25. 25.67 × 99 =
26. 26.7 × 9 =
27. 27.6 × 9 =
28. 28.22823 × 999 =
29. 29.179 × 999 =
30. 30.448 × 99 =
31. 31.4 × 9 =
32. 32.646 × 999 =
33. 33.8 × 9 =
34. 34.884 × 999 =
35. 35.3 × 9 =
36. 36.1311 × 999 =
37. 37.31 × 99 =
38. 38.8 × 9 =
39. 39.2 × 9 =
40. 40.21 × 99 =

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