Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 917 · 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. 1.232 × 9 =
2. 2.1151 × 99 =
3. 3.2 × 9 =
4. 4.6 × 9 =
5. 5.2431 × 99 =
6. 6.37 × 9 =
7. 7.64 × 99 =
8. 8.4 × 9 =
9. 9.91 × 99 =
10. 10.7 × 9 =
11. 11.37 × 999 =
12. 12.2 × 9 =
13. 13.19515 × 999 =
14. 14.62 × 99 =
15. 15.82 × 99 =
16. 16.2245 × 99 =
17. 17.436 × 999 =
18. 18.762 × 999 =
19. 19.323 × 99 =
20. 20.5 × 9 =
21. 21.4 × 9 =
22. 22.253 × 999 =
23. 23.772 × 999 =
24. 24.91 × 99 =
25. 25.4 × 9 =
26. 26.21449 × 999 =
27. 27.52 × 99 =
28. 28.2 × 9 =
29. 29.24 × 99 =
30. 30.37 × 99 =
31. 31.841 × 99 =
32. 32.253 × 9 =
33. 33.5 × 9 =
34. 34.936 × 999 =
35. 35.5 × 9 =
36. 36.5 × 9 =
37. 37.38 × 99 =
38. 38.2 × 9 =
39. 39.48 × 99 =
40. 40.284 × 999 =

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