Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 909 · 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. 1.7 × 9 =
2. 2.4 × 9 =
3. 3.19482 × 999 =
4. 4.3 × 99 =
5. 5.4 × 9 =
6. 6.28 × 99 =
7. 7.401 × 999 =
8. 8.4 × 9 =
9. 9.16661 × 999 =
10. 10.10936 × 999 =
11. 11.858 × 999 =
12. 12.6793 × 999 =
13. 13.22 × 99 =
14. 14.11 × 9 =
15. 15.185 × 9 =
16. 16.5 × 9 =
17. 17.517 × 999 =
18. 18.7005 × 999 =
19. 19.5 × 9 =
20. 20.646 × 999 =
21. 21.92 × 99 =
22. 22.41 × 99 =
23. 23.494 × 999 =
24. 24.7 × 9 =
25. 25.1493 × 99 =
26. 26.21525 × 999 =
27. 27.17702 × 999 =
28. 28.914 × 999 =
29. 29.3 × 9 =
30. 30.943 × 999 =
31. 31.678 × 999 =
32. 32.4 × 9 =
33. 33.89 × 99 =
34. 34.86 × 99 =
35. 35.12 × 99 =
36. 36.928 × 999 =
37. 37.2 × 9 =
38. 38.22 × 999 =
39. 39.733 × 99 =
40. 40.81 × 99 =

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