Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 302 · 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. 1.28 × 99 =
2. 2.336 × 999 =
3. 3.78 × 9 =
4. 4.81 × 99 =
5. 5.55 × 99 =
6. 6.789 × 99 =
7. 7.57 × 99 =
8. 8.138 × 999 =
9. 9.9 × 99 =
10. 10.47 × 99 =
11. 11.88 × 99 =
12. 12.61 × 99 =
13. 13.8 × 9 =
14. 14.679 × 999 =
15. 15.2 × 9 =
16. 16.2811 × 99 =
17. 17.858 × 99 =
18. 18.81 × 99 =
19. 19.761 × 999 =
20. 20.6 × 9 =
21. 21.15314 × 999 =
22. 22.8 × 9 =
23. 23.117 × 999 =
24. 24.3 × 9 =
25. 25.222 × 999 =
26. 26.59 × 99 =
27. 27.896 × 999 =
28. 28.6 × 9 =
29. 29.291 × 99 =
30. 30.7 × 9 =
31. 31.104 × 9 =
32. 32.6 × 9 =
33. 33.344 × 999 =
34. 34.728 × 999 =
35. 35.19157 × 999 =
36. 36.6 × 9 =
37. 37.63 × 999 =
38. 38.4 × 9 =
39. 39.3 × 9 =
40. 40.9475 × 999 =

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