Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 255 · 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. 1.2 × 9 =
2. 2.538 × 999 =
3. 3.44 × 99 =
4. 4.12 × 9 =
5. 5.794 × 999 =
6. 6.6 × 9 =
7. 7.128 × 999 =
8. 8.3416 × 999 =
9. 9.29 × 99 =
10. 10.816 × 99 =
11. 11.2 × 9 =
12. 12.48 × 99 =
13. 13.672 × 999 =
14. 14.44 × 99 =
15. 15.964 × 99 =
16. 16.5 × 9 =
17. 17.873 × 999 =
18. 18.39 × 99 =
19. 19.81 × 99 =
20. 20.7 × 9 =
21. 21.15 × 99 =
22. 22.3 × 9 =
23. 23.7 × 9 =
24. 24.163 × 99 =
25. 25.192 × 9 =
26. 26.277 × 999 =
27. 27.31 × 99 =
28. 28.17222 × 999 =
29. 29.4433 × 999 =
30. 30.28 × 99 =
31. 31.123 × 999 =
32. 32.2 × 9 =
33. 33.928 × 999 =
34. 34.11 × 9 =
35. 35.3 × 9 =
36. 36.877 × 999 =
37. 37.2 × 9 =
38. 38.5 × 9 =
39. 39.66 × 99 =
40. 40.191 × 999 =

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