Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 23 · 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. 1.53 × 99 =
2. 2.542 × 99 =
3. 3.3 × 9 =
4. 4.67 × 9 =
5. 5.1465 × 99 =
6. 6.272 × 999 =
7. 7.969 × 999 =
8. 8.2 × 9 =
9. 9.2709 × 99 =
10. 10.2781 × 99 =
11. 11.82 × 99 =
12. 12.492 × 999 =
13. 13.24446 × 999 =
14. 14.704 × 999 =
15. 15.17 × 99 =
16. 16.7267 × 999 =
17. 17.1719 × 99 =
18. 18.167 × 9 =
19. 19.91 × 999 =
20. 20.5 × 9 =
21. 21.23907 × 999 =
22. 22.369 × 999 =
23. 23.2 × 9 =
24. 24.31 × 99 =
25. 25.5 × 9 =
26. 26.423 × 999 =
27. 27.4 × 9 =
28. 28.18756 × 999 =
29. 29.522 × 999 =
30. 30.7 × 99 =
31. 31.16 × 9 =
32. 32.5 × 9 =
33. 33.92 × 99 =
34. 34.989 × 999 =
35. 35.25 × 99 =
36. 36.927 × 999 =
37. 37.211 × 999 =
38. 38.81 × 99 =
39. 39.25 × 99 =
40. 40.4 × 9 =

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