Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 12 · 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. 1.1191 × 99 =
2. 2.81 × 99 =
3. 3.104 × 9 =
4. 4.813 × 999 =
5. 5.3 × 99 =
6. 6.3 × 9 =
7. 7.1712 × 99 =
8. 8.24279 × 999 =
9. 9.33 × 99 =
10. 10.4 × 9 =
11. 11.542 × 99 =
12. 12.4 × 9 =
13. 13.7 × 9 =
14. 14.457 × 99 =
15. 15.3 × 99 =
16. 16.53 × 99 =
17. 17.721 × 99 =
18. 18.15 × 99 =
19. 19.61 × 99 =
20. 20.316 × 999 =
21. 21.3 × 9 =
22. 22.53 × 99 =
23. 23.8 × 9 =
24. 24.5 × 9 =
25. 25.396 × 999 =
26. 26.1842 × 99 =
27. 27.13 × 99 =
28. 28.95 × 99 =
29. 29.3 × 9 =
30. 30.3 × 9 =
31. 31.735 × 999 =
32. 32.8753 × 999 =
33. 33.93 × 99 =
34. 34.5 × 9 =
35. 35.641 × 99 =
36. 36.24335 × 999 =
37. 37.4 × 9 =
38. 38.4 × 9 =
39. 39.104 × 9 =
40. 40.671 × 99 =

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