Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 358 · 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. 1.71 × 99 =
2. 2.941 × 999 =
3. 3.264 × 9 =
4. 4.67 × 99 =
5. 5.828 × 999 =
6. 6.1107 × 999 =
7. 7.45 × 99 =
8. 8.2651 × 99 =
9. 9.43 × 9 =
10. 10.87 × 9 =
11. 11.421 × 999 =
12. 12.6 × 9 =
13. 13.144 × 99 =
14. 14.768 × 99 =
15. 15.2552 × 99 =
16. 16.104 × 9 =
17. 17.81 × 99 =
18. 18.6 × 9 =
19. 19.328 × 999 =
20. 20.5 × 9 =
21. 21.2304 × 99 =
22. 22.5842 × 999 =
23. 23.1919 × 99 =
24. 24.12161 × 999 =
25. 25.263 × 999 =
26. 26.74 × 99 =
27. 27.26 × 99 =
28. 28.49 × 99 =
29. 29.56 × 99 =
30. 30.889 × 999 =
31. 31.5 × 9 =
32. 32.268 × 9 =
33. 33.8 × 99 =
34. 34.17732 × 999 =
35. 35.49 × 999 =
36. 36.25 × 9 =
37. 37.11 × 99 =
38. 38.6 × 99 =
39. 39.441 × 999 =
40. 40.31 × 99 =

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