Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 507 · 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. 1.1704 × 99 =
2. 2.18 × 999 =
3. 3.5 × 9 =
4. 4.84 × 9 =
5. 5.2 × 99 =
6. 6.11 × 99 =
7. 7.108 × 9 =
8. 8.154 × 9 =
9. 9.52 × 9 =
10. 10.5 × 9 =
11. 11.7 × 9 =
12. 12.66 × 99 =
13. 13.8 × 9 =
14. 14.34 × 99 =
15. 15.83 × 9 =
16. 16.76 × 99 =
17. 17.2 × 9 =
18. 18.46 × 99 =
19. 19.719 × 999 =
20. 20.3 × 9 =
21. 21.197 × 999 =
22. 22.361 × 999 =
23. 23.11 × 99 =
24. 24.741 × 999 =
25. 25.41 × 9 =
26. 26.4 × 9 =
27. 27.251 × 9 =
28. 28.2 × 9 =
29. 29.45 × 99 =
30. 30.93 × 99 =
31. 31.189 × 9 =
32. 32.333 × 999 =
33. 33.1278 × 99 =
34. 34.2 × 9 =
35. 35.831 × 999 =
36. 36.19 × 99 =
37. 37.33 × 999 =
38. 38.6 × 9 =
39. 39.5 × 9 =
40. 40.7 × 9 =

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