Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 459 · 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. 1.473 × 99 =
2. 2.38 × 99 =
3. 3.71 × 99 =
4. 4.891 × 999 =
5. 5.22379 × 999 =
6. 6.503 × 999 =
7. 7.8 × 9 =
8. 8.72 × 9 =
9. 9.16032 × 999 =
10. 10.31 × 99 =
11. 11.355 × 999 =
12. 12.891 × 99 =
13. 13.89 × 99 =
14. 14.23285 × 999 =
15. 15.72 × 99 =
16. 16.209 × 99 =
17. 17.12 × 99 =
18. 18.66 × 99 =
19. 19.8 × 9 =
20. 20.114 × 9 =
21. 21.656 × 99 =
22. 22.26335 × 999 =
23. 23.16679 × 999 =
24. 24.2 × 99 =
25. 25.115 × 9 =
26. 26.238 × 9 =
27. 27.4 × 9 =
28. 28.81 × 99 =
29. 29.91 × 99 =
30. 30.487 × 999 =
31. 31.85 × 99 =
32. 32.2 × 9 =
33. 33.256 × 999 =
34. 34.215 × 9 =
35. 35.2837 × 99 =
36. 36.49 × 99 =
37. 37.25421 × 999 =
38. 38.13 × 99 =
39. 39.96 × 99 =
40. 40.3 × 9 =

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