Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 129 · 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. 1.182 × 9 =
2. 2.535 × 999 =
3. 3.5 × 9 =
4. 4.213 × 9 =
5. 5.22129 × 999 =
6. 6.5 × 9 =
7. 7.8 × 99 =
8. 8.2 × 9 =
9. 9.241 × 99 =
10. 10.15 × 99 =
11. 11.21 × 9 =
12. 12.14 × 99 =
13. 13.2815 × 99 =
14. 14.981 × 999 =
15. 15.22 × 99 =
16. 16.59 × 99 =
17. 17.92 × 99 =
18. 18.553 × 999 =
19. 19.514 × 999 =
20. 20.3 × 9 =
21. 21.75 × 99 =
22. 22.38 × 99 =
23. 23.6 × 9 =
24. 24.72 × 99 =
25. 25.141 × 999 =
26. 26.25318 × 999 =
27. 27.89 × 9 =
28. 28.7 × 9 =
29. 29.2185 × 99 =
30. 30.6 × 9 =
31. 31.8 × 9 =
32. 32.36 × 99 =
33. 33.977 × 999 =
34. 34.7 × 9 =
35. 35.51 × 99 =
36. 36.17 × 99 =
37. 37.55 × 99 =
38. 38.138 × 9 =
39. 39.45 × 99 =
40. 40.261 × 9 =

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