Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 233 · 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. 1.6 × 9 =
2. 2.71 × 99 =
3. 3.5 × 9 =
4. 4.1081 × 99 =
5. 5.55 × 99 =
6. 6.42 × 99 =
7. 7.2 × 9 =
8. 8.7 × 9 =
9. 9.4 × 9 =
10. 10.6 × 9 =
11. 11.15 × 99 =
12. 12.16 × 99 =
13. 13.86 × 999 =
14. 14.3 × 9 =
15. 15.82 × 99 =
16. 16.5 × 9 =
17. 17.3 × 9 =
18. 18.86 × 99 =
19. 19.8 × 9 =
20. 20.124 × 9 =
21. 21.682 × 999 =
22. 22.41 × 99 =
23. 23.4 × 9 =
24. 24.551 × 999 =
25. 25.832 × 99 =
26. 26.866 × 999 =
27. 27.466 × 999 =
28. 28.19228 × 999 =
29. 29.91 × 99 =
30. 30.3 × 9 =
31. 31.26 × 99 =
32. 32.78 × 99 =
33. 33.195 × 999 =
34. 34.606 × 999 =
35. 35.1791 × 99 =
36. 36.469 × 999 =
37. 37.776 × 999 =
38. 38.749 × 999 =
39. 39.83 × 99 =
40. 40.149 × 9 =

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