Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 311 · 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. 1.85 × 9 =
2. 2.31 × 99 =
3. 3.35 × 999 =
4. 4.3 × 9 =
5. 5.46 × 9 =
6. 6.66 × 99 =
7. 7.2 × 9 =
8. 8.2 × 9 =
9. 9.4 × 9 =
10. 10.1831 × 99 =
11. 11.96 × 99 =
12. 12.85 × 99 =
13. 13.8 × 9 =
14. 14.5 × 9 =
15. 15.2 × 9 =
16. 16.951 × 999 =
17. 17.57 × 99 =
18. 18.17 × 99 =
19. 19.43 × 99 =
20. 20.12516 × 999 =
21. 21.47 × 99 =
22. 22.951 × 999 =
23. 23.47 × 99 =
24. 24.3 × 9 =
25. 25.82 × 99 =
26. 26.477 × 999 =
27. 27.8487 × 999 =
28. 28.55 × 99 =
29. 29.211 × 999 =
30. 30.96 × 99 =
31. 31.18 × 99 =
32. 32.59 × 99 =
33. 33.476 × 999 =
34. 34.98 × 99 =
35. 35.8 × 99 =
36. 36.3199 × 999 =
37. 37.343 × 999 =
38. 38.6 × 9 =
39. 39.425 × 999 =
40. 40.673 × 999 =

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