Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 747 · 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. 1.22 × 9 =
2. 2.1691 × 99 =
3. 3.141 × 9 =
4. 4.66 × 99 =
5. 5.17163 × 999 =
6. 6.373 × 999 =
7. 7.1118 × 99 =
8. 8.224 × 9 =
9. 9.109 × 9 =
10. 10.51 × 99 =
11. 11.167 × 9 =
12. 12.19 × 99 =
13. 13.6 × 9 =
14. 14.196 × 999 =
15. 15.98 × 9 =
16. 16.627 × 999 =
17. 17.6 × 99 =
18. 18.7 × 99 =
19. 19.69 × 99 =
20. 20.28 × 99 =
21. 21.5 × 99 =
22. 22.271 × 999 =
23. 23.649 × 999 =
24. 24.142 × 999 =
25. 25.8 × 9 =
26. 26.5 × 99 =
27. 27.28281 × 999 =
28. 28.16 × 99 =
29. 29.2761 × 99 =
30. 30.12085 × 999 =
31. 31.11861 × 999 =
32. 32.188 × 9 =
33. 33.4 × 9 =
34. 34.93 × 99 =
35. 35.787 × 999 =
36. 36.41 × 99 =
37. 37.6 × 9 =
38. 38.287 × 99 =
39. 39.636 × 999 =
40. 40.393 × 99 =

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