Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 158 · 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. 1.2491 × 99 =
2. 2.151 × 999 =
3. 3.3 × 9 =
4. 4.17215 × 999 =
5. 5.6 × 9 =
6. 6.951 × 999 =
7. 7.2 × 9 =
8. 8.277 × 999 =
9. 9.2428 × 99 =
10. 10.3 × 9 =
11. 11.167 × 999 =
12. 12.881 × 99 =
13. 13.3 × 9 =
14. 14.25 × 99 =
15. 15.9809 × 999 =
16. 16.4 × 9 =
17. 17.4 × 9 =
18. 18.21322 × 999 =
19. 19.36 × 99 =
20. 20.6 × 9 =
21. 21.2 × 9 =
22. 22.464 × 999 =
23. 23.41 × 99 =
24. 24.8 × 9 =
25. 25.21 × 9 =
26. 26.46 × 9 =
27. 27.13 × 999 =
28. 28.2912 × 99 =
29. 29.73 × 99 =
30. 30.269 × 9 =
31. 31.35 × 99 =
32. 32.97 × 9 =
33. 33.236 × 9 =
34. 34.162 × 999 =
35. 35.66 × 9 =
36. 36.938 × 999 =
37. 37.503 × 999 =
38. 38.2595 × 99 =
39. 39.887 × 99 =
40. 40.2271 × 99 =

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