Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 352 · 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. 1.47 × 99 =
2. 2.8 × 9 =
3. 3.622 × 999 =
4. 4.1445 × 99 =
5. 5.571 × 999 =
6. 6.2 × 9 =
7. 7.2 × 9 =
8. 8.2491 × 99 =
9. 9.74 × 99 =
10. 10.5 × 9 =
11. 11.2 × 99 =
12. 12.3 × 9 =
13. 13.8 × 9 =
14. 14.11 × 9 =
15. 15.121 × 9 =
16. 16.207 × 9 =
17. 17.71 × 99 =
18. 18.69 × 99 =
19. 19.2 × 9 =
20. 20.6 × 9 =
21. 21.289 × 999 =
22. 22.623 × 999 =
23. 23.28785 × 999 =
24. 24.24471 × 999 =
25. 25.768 × 999 =
26. 26.978 × 999 =
27. 27.8 × 9 =
28. 28.2 × 9 =
29. 29.173 × 999 =
30. 30.8 × 9 =
31. 31.235 × 9 =
32. 32.12576 × 999 =
33. 33.2 × 9 =
34. 34.159 × 999 =
35. 35.75 × 99 =
36. 36.8 × 9 =
37. 37.43 × 99 =
38. 38.4 × 9 =
39. 39.421 × 99 =
40. 40.2 × 9 =

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