Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 570 · 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. 1.11151 × 999 =
2. 2.279 × 999 =
3. 3.2014 × 99 =
4. 4.97 × 9 =
5. 5.119 × 9 =
6. 6.8 × 99 =
7. 7.49 × 99 =
8. 8.8 × 9 =
9. 9.79 × 99 =
10. 10.114 × 999 =
11. 11.15 × 99 =
12. 12.456 × 999 =
13. 13.8 × 9 =
14. 14.8 × 9 =
15. 15.2 × 9 =
16. 16.51 × 99 =
17. 17.12707 × 999 =
18. 18.49 × 9 =
19. 19.29816 × 999 =
20. 20.167 × 9 =
21. 21.372 × 99 =
22. 22.81 × 99 =
23. 23.271 × 999 =
24. 24.84 × 99 =
25. 25.5 × 9 =
26. 26.618 × 999 =
27. 27.1716 × 99 =
28. 28.26 × 99 =
29. 29.3 × 9 =
30. 30.808 × 999 =
31. 31.584 × 999 =
32. 32.21 × 99 =
33. 33.28231 × 999 =
34. 34.4 × 9 =
35. 35.1326 × 99 =
36. 36.146 × 9 =
37. 37.7 × 9 =
38. 38.2 × 9 =
39. 39.91 × 99 =
40. 40.225 × 999 =

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