Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 329 · 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. 1.94 × 99 =
2. 2.37 × 99 =
3. 3.16 × 99 =
4. 4.483 × 999 =
5. 5.594 × 999 =
6. 6.44 × 99 =
7. 7.621 × 99 =
8. 8.4 × 9 =
9. 9.8 × 9 =
10. 10.864 × 99 =
11. 11.41 × 99 =
12. 12.16 × 99 =
13. 13.2 × 9 =
14. 14.2 × 9 =
15. 15.3 × 9 =
16. 16.5 × 9 =
17. 17.55 × 999 =
18. 18.81 × 99 =
19. 19.4 × 99 =
20. 20.796 × 99 =
21. 21.72 × 99 =
22. 22.75 × 9 =
23. 23.8 × 9 =
24. 24.6 × 99 =
25. 25.59 × 99 =
26. 26.20641 × 999 =
27. 27.501 × 999 =
28. 28.44 × 99 =
29. 29.1741 × 99 =
30. 30.221 × 999 =
31. 31.848 × 99 =
32. 32.2 × 9 =
33. 33.813 × 999 =
34. 34.2 × 9 =
35. 35.191 × 9 =
36. 36.753 × 999 =
37. 37.91 × 99 =
38. 38.48 × 99 =
39. 39.767 × 999 =
40. 40.3 × 9 =

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