Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 643 · 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. 1.7 × 999 =
2. 2.6321 × 999 =
3. 3.72 × 999 =
4. 4.19429 × 999 =
5. 5.552 × 999 =
6. 6.97 × 9 =
7. 7.77 × 99 =
8. 8.71 × 99 =
9. 9.752 × 999 =
10. 10.665 × 999 =
11. 11.61 × 999 =
12. 12.2 × 9 =
13. 13.46 × 99 =
14. 14.3 × 9 =
15. 15.2 × 9 =
16. 16.872 × 99 =
17. 17.508 × 999 =
18. 18.2 × 9 =
19. 19.49 × 99 =
20. 20.1393 × 99 =
21. 21.85 × 99 =
22. 22.4 × 99 =
23. 23.2568 × 99 =
24. 24.376 × 999 =
25. 25.25288 × 999 =
26. 26.17406 × 999 =
27. 27.58 × 99 =
28. 28.21 × 99 =
29. 29.788 × 999 =
30. 30.98 × 9 =
31. 31.63 × 99 =
32. 32.938 × 99 =
33. 33.39 × 99 =
34. 34.3 × 9 =
35. 35.41 × 99 =
36. 36.15 × 9 =
37. 37.7 × 9 =
38. 38.46 × 99 =
39. 39.227 × 9 =
40. 40.17979 × 999 =

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