Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 479 · 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. 1.2061 × 99 =
2. 2.18271 × 999 =
3. 3.628 × 99 =
4. 4.986 × 99 =
5. 5.7 × 9 =
6. 6.622 × 999 =
7. 7.4 × 9 =
8. 8.724 × 999 =
9. 9.2101 × 99 =
10. 10.642 × 999 =
11. 11.17 × 99 =
12. 12.18 × 9 =
13. 13.23402 × 999 =
14. 14.55 × 9 =
15. 15.2 × 9 =
16. 16.3 × 9 =
17. 17.2515 × 99 =
18. 18.2691 × 99 =
19. 19.96 × 9 =
20. 20.492 × 999 =
21. 21.778 × 999 =
22. 22.43 × 99 =
23. 23.27 × 99 =
24. 24.589 × 999 =
25. 25.61 × 99 =
26. 26.6 × 9 =
27. 27.295 × 999 =
28. 28.25374 × 999 =
29. 29.41 × 99 =
30. 30.83 × 99 =
31. 31.712 × 999 =
32. 32.899 × 999 =
33. 33.268 × 999 =
34. 34.91 × 99 =
35. 35.2 × 9 =
36. 36.12 × 999 =
37. 37.5 × 9 =
38. 38.3 × 9 =
39. 39.92 × 9 =
40. 40.243 × 9 =

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