Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 868 · 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. 1.51 × 99 =
2. 2.34 × 99 =
3. 3.52 × 99 =
4. 4.82 × 9 =
5. 5.2 × 9 =
6. 6.22 × 99 =
7. 7.26905 × 999 =
8. 8.62 × 99 =
9. 9.85 × 9 =
10. 10.91 × 99 =
11. 11.243 × 999 =
12. 12.64 × 99 =
13. 13.23272 × 999 =
14. 14.5 × 9 =
15. 15.2547 × 999 =
16. 16.3 × 9 =
17. 17.7411 × 999 =
18. 18.1848 × 99 =
19. 19.3 × 9 =
20. 20.694 × 999 =
21. 21.4 × 9 =
22. 22.52 × 99 =
23. 23.81 × 99 =
24. 24.2 × 9 =
25. 25.171 × 9 =
26. 26.855 × 999 =
27. 27.3 × 9 =
28. 28.3 × 9 =
29. 29.2529 × 99 =
30. 30.205 × 99 =
31. 31.65 × 99 =
32. 32.57 × 99 =
33. 33.57 × 99 =
34. 34.4 × 9 =
35. 35.7 × 9 =
36. 36.22 × 99 =
37. 37.2725 × 99 =
38. 38.2 × 9 =
39. 39.141 × 999 =
40. 40.6 × 9 =

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