Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 682 · 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. 1.20019 × 999 =
2. 2.3241 × 999 =
3. 3.15 × 9 =
4. 4.4 × 9 =
5. 5.81 × 99 =
6. 6.81 × 9 =
7. 7.972 × 999 =
8. 8.4 × 9 =
9. 9.272 × 999 =
10. 10.1698 × 99 =
11. 11.2111 × 99 =
12. 12.359 × 999 =
13. 13.14 × 99 =
14. 14.62 × 99 =
15. 15.89 × 9 =
16. 16.7805 × 999 =
17. 17.8 × 9 =
18. 18.571 × 999 =
19. 19.74 × 999 =
20. 20.12 × 9 =
21. 21.5 × 9 =
22. 22.91 × 99 =
23. 23.293 × 99 =
24. 24.8 × 9 =
25. 25.7 × 9 =
26. 26.504 × 999 =
27. 27.10081 × 999 =
28. 28.5 × 9 =
29. 29.51 × 9 =
30. 30.5 × 9 =
31. 31.955 × 999 =
32. 32.433 × 999 =
33. 33.618 × 99 =
34. 34.488 × 999 =
35. 35.96 × 99 =
36. 36.69 × 9 =
37. 37.7 × 9 =
38. 38.7 × 9 =
39. 39.1732 × 99 =
40. 40.368 × 999 =

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