Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 519 · 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. 1.64 × 99 =
2. 2.85 × 99 =
3. 3.527 × 99 =
4. 4.66 × 99 =
5. 5.144 × 9 =
6. 6.761 × 999 =
7. 7.6 × 9 =
8. 8.822 × 999 =
9. 9.939 × 999 =
10. 10.21 × 99 =
11. 11.181 × 999 =
12. 12.25 × 99 =
13. 13.2804 × 99 =
14. 14.7 × 99 =
15. 15.21 × 99 =
16. 16.1246 × 99 =
17. 17.396 × 999 =
18. 18.87 × 99 =
19. 19.73 × 9 =
20. 20.77 × 99 =
21. 21.391 × 999 =
22. 22.219 × 9 =
23. 23.7 × 99 =
24. 24.121 × 99 =
25. 25.46 × 999 =
26. 26.544 × 999 =
27. 27.3876 × 999 =
28. 28.8 × 9 =
29. 29.82 × 99 =
30. 30.9 × 99 =
31. 31.6 × 9 =
32. 32.7 × 9 =
33. 33.729 × 999 =
34. 34.73 × 99 =
35. 35.574 × 999 =
36. 36.2 × 9 =
37. 37.911 × 99 =
38. 38.4 × 99 =
39. 39.62 × 999 =
40. 40.42 × 9 =

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