Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 448 · 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. 2.8 × 9 =
3. 3.491 × 999 =
4. 4.75 × 99 =
5. 5.1696 × 99 =
6. 6.79 × 99 =
7. 7.201 × 999 =
8. 8.1622 × 99 =
9. 9.3 × 9 =
10. 10.4 × 9 =
11. 11.6 × 9 =
12. 12.4 × 99 =
13. 13.15 × 99 =
14. 14.83 × 99 =
15. 15.9307 × 999 =
16. 16.12 × 9 =
17. 17.31 × 99 =
18. 18.36 × 99 =
19. 19.1007 × 99 =
20. 20.3311 × 999 =
21. 21.28427 × 999 =
22. 22.91 × 9 =
23. 23.108 × 9 =
24. 24.711 × 999 =
25. 25.8 × 99 =
26. 26.241 × 999 =
27. 27.629 × 999 =
28. 28.364 × 99 =
29. 29.742 × 99 =
30. 30.35 × 99 =
31. 31.7885 × 999 =
32. 32.198 × 999 =
33. 33.194 × 999 =
34. 34.1463 × 99 =
35. 35.235 × 9 =
36. 36.8 × 99 =
37. 37.763 × 99 =
38. 38.26869 × 999 =
39. 39.5 × 9 =
40. 40.47 × 99 =

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