Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 954 · 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. 1.102 × 9 =
2. 2.17568 × 999 =
3. 3.5013 × 999 =
4. 4.5 × 9 =
5. 5.3 × 9 =
6. 6.5 × 9 =
7. 7.86 × 99 =
8. 8.507 × 99 =
9. 9.2699 × 99 =
10. 10.73 × 99 =
11. 11.24 × 99 =
12. 12.7 × 9 =
13. 13.762 × 999 =
14. 14.3 × 9 =
15. 15.246 × 99 =
16. 16.814 × 999 =
17. 17.57 × 99 =
18. 18.711 × 99 =
19. 19.67 × 99 =
20. 20.2 × 9 =
21. 21.3 × 99 =
22. 22.3 × 9 =
23. 23.87 × 99 =
24. 24.8 × 99 =
25. 25.878 × 999 =
26. 26.6 × 9 =
27. 27.78 × 99 =
28. 28.71 × 99 =
29. 29.74 × 99 =
30. 30.65 × 99 =
31. 31.2783 × 99 =
32. 32.2 × 99 =
33. 33.64 × 99 =
34. 34.7 × 9 =
35. 35.3 × 9 =
36. 36.4 × 9 =
37. 37.6 × 9 =
38. 38.4 × 9 =
39. 39.74 × 99 =
40. 40.7 × 9 =

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