Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 109 · 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. 1.4 × 9 =
2. 2.21169 × 999 =
3. 3.128 × 999 =
4. 4.6 × 9 =
5. 5.802 × 999 =
6. 6.82 × 99 =
7. 7.5 × 9 =
8. 8.36 × 99 =
9. 9.2 × 9 =
10. 10.62 × 99 =
11. 11.175 × 999 =
12. 12.985 × 999 =
13. 13.221 × 999 =
14. 14.839 × 999 =
15. 15.11 × 9 =
16. 16.42 × 99 =
17. 17.434 × 999 =
18. 18.3 × 9 =
19. 19.31 × 99 =
20. 20.44 × 99 =
21. 21.3 × 9 =
22. 22.84 × 999 =
23. 23.71 × 99 =
24. 24.179 × 999 =
25. 25.24 × 99 =
26. 26.15222 × 999 =
27. 27.918 × 999 =
28. 28.64 × 99 =
29. 29.651 × 99 =
30. 30.209 × 9 =
31. 31.21397 × 999 =
32. 32.6 × 9 =
33. 33.97 × 9 =
34. 34.145 × 999 =
35. 35.28286 × 999 =
36. 36.1121 × 99 =
37. 37.66 × 9 =
38. 38.20305 × 999 =
39. 39.21 × 99 =
40. 40.1423 × 99 =

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