Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 628 · 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. 1.661 × 999 =
2. 2.83 × 99 =
3. 3.3 × 9 =
4. 4.2 × 9 =
5. 5.84 × 999 =
6. 6.4 × 99 =
7. 7.97 × 99 =
8. 8.198 × 999 =
9. 9.2418 × 99 =
10. 10.2173 × 99 =
11. 11.21 × 99 =
12. 12.515 × 999 =
13. 13.113 × 999 =
14. 14.8 × 9 =
15. 15.719 × 999 =
16. 16.61 × 99 =
17. 17.2942 × 99 =
18. 18.4 × 9 =
19. 19.61 × 99 =
20. 20.6 × 9 =
21. 21.4 × 9 =
22. 22.2741 × 99 =
23. 23.2 × 9 =
24. 24.183 × 999 =
25. 25.578 × 999 =
26. 26.3 × 9 =
27. 27.371 × 999 =
28. 28.75 × 99 =
29. 29.63 × 9 =
30. 30.179 × 9 =
31. 31.61 × 99 =
32. 32.851 × 999 =
33. 33.2 × 9 =
34. 34.31 × 99 =
35. 35.1779 × 99 =
36. 36.39 × 99 =
37. 37.537 × 99 =
38. 38.2 × 99 =
39. 39.7385 × 999 =
40. 40.31 × 99 =

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