Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 331 · 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 × 99 =
2. 2.15 × 99 =
3. 3.299 × 999 =
4. 4.243 × 99 =
5. 5.3 × 9 =
6. 6.33 × 99 =
7. 7.1489 × 99 =
8. 8.206 × 999 =
9. 9.552 × 999 =
10. 10.23093 × 999 =
11. 11.8 × 9 =
12. 12.5 × 9 =
13. 13.11 × 99 =
14. 14.756 × 999 =
15. 15.997 × 999 =
16. 16.7 × 9 =
17. 17.1856 × 99 =
18. 18.19512 × 999 =
19. 19.5 × 9 =
20. 20.318 × 999 =
21. 21.7 × 9 =
22. 22.29 × 9 =
23. 23.952 × 999 =
24. 24.7 × 9 =
25. 25.18 × 99 =
26. 26.86 × 99 =
27. 27.45 × 99 =
28. 28.22001 × 999 =
29. 29.369 × 999 =
30. 30.7 × 9 =
31. 31.195 × 999 =
32. 32.719 × 999 =
33. 33.3 × 9 =
34. 34.59 × 9 =
35. 35.645 × 999 =
36. 36.87 × 99 =
37. 37.171 × 9 =
38. 38.8 × 9 =
39. 39.1067 × 99 =
40. 40.87 × 99 =

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