Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 812 · 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. 1.83 × 99 =
2. 2.4061 × 999 =
3. 3.29 × 99 =
4. 4.5 × 99 =
5. 5.41 × 99 =
6. 6.2 × 9 =
7. 7.81 × 99 =
8. 8.58 × 99 =
9. 9.3 × 9 =
10. 10.241 × 99 =
11. 11.422 × 999 =
12. 12.32 × 99 =
13. 13.3 × 9 =
14. 14.12267 × 999 =
15. 15.41 × 99 =
16. 16.87 × 99 =
17. 17.9704 × 999 =
18. 18.51 × 99 =
19. 19.898 × 99 =
20. 20.4628 × 999 =
21. 21.1017 × 99 =
22. 22.49 × 99 =
23. 23.529 × 999 =
24. 24.38 × 99 =
25. 25.88 × 99 =
26. 26.8 × 9 =
27. 27.18208 × 999 =
28. 28.51 × 99 =
29. 29.7 × 9 =
30. 30.252 × 9 =
31. 31.971 × 999 =
32. 32.4597 × 999 =
33. 33.43 × 99 =
34. 34.8 × 9 =
35. 35.321 × 99 =
36. 36.88 × 99 =
37. 37.11 × 99 =
38. 38.19 × 99 =
39. 39.8 × 9 =
40. 40.37 × 99 =

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