Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 332 · 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. 1.836 × 99 =
2. 2.14599 × 999 =
3. 3.543 × 999 =
4. 4.28 × 99 =
5. 5.2 × 9 =
6. 6.45 × 99 =
7. 7.474 × 999 =
8. 8.2 × 9 =
9. 9.1823 × 99 =
10. 10.16 × 99 =
11. 11.515 × 999 =
12. 12.563 × 999 =
13. 13.144 × 999 =
14. 14.4 × 9 =
15. 15.761 × 999 =
16. 16.662 × 999 =
17. 17.341 × 999 =
18. 18.95 × 999 =
19. 19.18 × 99 =
20. 20.2 × 9 =
21. 21.202 × 999 =
22. 22.507 × 999 =
23. 23.56 × 99 =
24. 24.5 × 9 =
25. 25.58 × 99 =
26. 26.95 × 99 =
27. 27.5 × 9 =
28. 28.69 × 99 =
29. 29.891 × 999 =
30. 30.91 × 99 =
31. 31.916 × 999 =
32. 32.15 × 999 =
33. 33.10391 × 999 =
34. 34.31 × 99 =
35. 35.3 × 99 =
36. 36.37 × 99 =
37. 37.29 × 99 =
38. 38.76 × 9 =
39. 39.82 × 99 =
40. 40.788 × 99 =

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