Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 666 · 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. 1.293 × 999 =
2. 2.15 × 99 =
3. 3.699 × 999 =
4. 4.22 × 99 =
5. 5.64 × 99 =
6. 6.1043 × 99 =
7. 7.2 × 9 =
8. 8.138 × 999 =
9. 9.10055 × 999 =
10. 10.2 × 9 =
11. 11.11 × 9 =
12. 12.67 × 99 =
13. 13.8 × 9 =
14. 14.53 × 99 =
15. 15.148 × 9 =
16. 16.35 × 99 =
17. 17.35 × 99 =
18. 18.4 × 9 =
19. 19.81 × 99 =
20. 20.92 × 99 =
21. 21.186 × 999 =
22. 22.79 × 99 =
23. 23.2 × 9 =
24. 24.969 × 999 =
25. 25.53 × 9 =
26. 26.513 × 999 =
27. 27.501 × 99 =
28. 28.98 × 99 =
29. 29.92 × 999 =
30. 30.21 × 99 =
31. 31.2 × 9 =
32. 32.22 × 99 =
33. 33.44 × 9 =
34. 34.4704 × 999 =
35. 35.57 × 99 =
36. 36.7 × 9 =
37. 37.1868 × 99 =
38. 38.692 × 999 =
39. 39.16451 × 999 =
40. 40.7 × 9 =

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