Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 182 · 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. 1.172 × 9 =
2. 2.391 × 999 =
3. 3.111 × 9 =
4. 4.4 × 9 =
5. 5.85 × 99 =
6. 6.411 × 999 =
7. 7.73 × 99 =
8. 8.25 × 999 =
9. 9.89 × 99 =
10. 10.45 × 999 =
11. 11.205 × 999 =
12. 12.3 × 99 =
13. 13.471 × 999 =
14. 14.6 × 9 =
15. 15.8 × 9 =
16. 16.18263 × 999 =
17. 17.18958 × 999 =
18. 18.18 × 99 =
19. 19.569 × 999 =
20. 20.48 × 99 =
21. 21.2 × 9 =
22. 22.52 × 99 =
23. 23.14 × 99 =
24. 24.101 × 9 =
25. 25.183 × 9 =
26. 26.787 × 99 =
27. 27.667 × 999 =
28. 28.31 × 999 =
29. 29.346 × 999 =
30. 30.5 × 9 =
31. 31.59 × 99 =
32. 32.2744 × 99 =
33. 33.754 × 999 =
34. 34.18994 × 999 =
35. 35.121 × 999 =
36. 36.85 × 99 =
37. 37.5 × 9 =
38. 38.3 × 9 =
39. 39.94 × 99 =
40. 40.11243 × 999 =

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