Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 673 · 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. 1.1557 × 99 =
2. 2.425 × 99 =
3. 3.862 × 99 =
4. 4.2 × 9 =
5. 5.404 × 999 =
6. 6.55 × 99 =
7. 7.1892 × 99 =
8. 8.45 × 9 =
9. 9.561 × 999 =
10. 10.471 × 999 =
11. 11.8 × 9 =
12. 12.4 × 9 =
13. 13.608 × 999 =
14. 14.94 × 99 =
15. 15.68 × 99 =
16. 16.61 × 99 =
17. 17.45 × 99 =
18. 18.5 × 9 =
19. 19.11825 × 999 =
20. 20.3 × 9 =
21. 21.849 × 999 =
22. 22.2341 × 99 =
23. 23.7 × 99 =
24. 24.13 × 99 =
25. 25.987 × 99 =
26. 26.6 × 9 =
27. 27.82 × 9 =
28. 28.401 × 999 =
29. 29.4 × 9 =
30. 30.26 × 99 =
31. 31.27 × 999 =
32. 32.97 × 99 =
33. 33.256 × 9 =
34. 34.58 × 99 =
35. 35.122 × 999 =
36. 36.61 × 99 =
37. 37.647 × 999 =
38. 38.69 × 99 =
39. 39.177 × 99 =
40. 40.12411 × 999 =

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