Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 662 · 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. 1.94 × 99 =
2. 2.21 × 99 =
3. 3.801 × 999 =
4. 4.11 × 99 =
5. 5.93 × 99 =
6. 6.52 × 99 =
7. 7.23971 × 999 =
8. 8.292 × 999 =
9. 9.35 × 99 =
10. 10.1195 × 99 =
11. 11.25 × 99 =
12. 12.89 × 99 =
13. 13.1648 × 99 =
14. 14.531 × 999 =
15. 15.541 × 999 =
16. 16.4 × 9 =
17. 17.84 × 9 =
18. 18.79 × 99 =
19. 19.2 × 99 =
20. 20.4 × 9 =
21. 21.2502 × 99 =
22. 22.7 × 9 =
23. 23.193 × 999 =
24. 24.5 × 9 =
25. 25.2868 × 99 =
26. 26.623 × 999 =
27. 27.19982 × 999 =
28. 28.8 × 9 =
29. 29.103 × 9 =
30. 30.2051 × 99 =
31. 31.145 × 9 =
32. 32.4 × 9 =
33. 33.263 × 9 =
34. 34.2005 × 99 =
35. 35.789 × 999 =
36. 36.161 × 9 =
37. 37.7 × 9 =
38. 38.2 × 9 =
39. 39.12 × 99 =
40. 40.1457 × 99 =

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