Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 391 · 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. 1.941 × 999 =
2. 2.19575 × 999 =
3. 3.5 × 9 =
4. 4.891 × 999 =
5. 5.7 × 9 =
6. 6.1936 × 99 =
7. 7.2752 × 99 =
8. 8.21 × 99 =
9. 9.2 × 9 =
10. 10.66 × 99 =
11. 11.2 × 9 =
12. 12.54 × 99 =
13. 13.21 × 99 =
14. 14.432 × 999 =
15. 15.8 × 9 =
16. 16.63 × 99 =
17. 17.4 × 9 =
18. 18.161 × 999 =
19. 19.531 × 999 =
20. 20.21156 × 999 =
21. 21.2 × 9 =
22. 22.82 × 99 =
23. 23.6 × 9 =
24. 24.31 × 99 =
25. 25.76 × 99 =
26. 26.89 × 99 =
27. 27.2 × 9 =
28. 28.7 × 99 =
29. 29.3 × 9 =
30. 30.985 × 999 =
31. 31.355 × 99 =
32. 32.141 × 9 =
33. 33.629 × 999 =
34. 34.42 × 99 =
35. 35.7 × 9 =
36. 36.19 × 999 =
37. 37.779 × 999 =
38. 38.91 × 99 =
39. 39.4 × 9 =
40. 40.97 × 99 =

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