Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 814 · 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. 1.21 × 99 =
2. 2.5 × 9 =
3. 3.5 × 9 =
4. 4.914 × 999 =
5. 5.64 × 99 =
6. 6.16 × 99 =
7. 7.1807 × 99 =
8. 8.9 × 99 =
9. 9.11 × 99 =
10. 10.822 × 999 =
11. 11.38 × 99 =
12. 12.188 × 999 =
13. 13.4 × 9 =
14. 14.3 × 9 =
15. 15.156 × 999 =
16. 16.4 × 9 =
17. 17.22 × 99 =
18. 18.61 × 99 =
19. 19.824 × 999 =
20. 20.226 × 9 =
21. 21.16 × 99 =
22. 22.1795 × 99 =
23. 23.8 × 9 =
24. 24.4 × 9 =
25. 25.221 × 9 =
26. 26.17109 × 999 =
27. 27.3302 × 999 =
28. 28.447 × 999 =
29. 29.951 × 999 =
30. 30.4 × 9 =
31. 31.435 × 999 =
32. 32.141 × 9 =
33. 33.2 × 9 =
34. 34.168 × 999 =
35. 35.7 × 9 =
36. 36.79 × 99 =
37. 37.74 × 99 =
38. 38.268 × 9 =
39. 39.41 × 99 =
40. 40.506 × 999 =

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