Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 692 · 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. 1.212 × 9 =
2. 2.77 × 9 =
3. 3.34 × 99 =
4. 4.1654 × 99 =
5. 5.2104 × 99 =
6. 6.22 × 99 =
7. 7.4 × 9 =
8. 8.7 × 9 =
9. 9.361 × 999 =
10. 10.4 × 9 =
11. 11.15739 × 999 =
12. 12.9 × 99 =
13. 13.611 × 999 =
14. 14.381 × 99 =
15. 15.5 × 99 =
16. 16.5 × 9 =
17. 17.4 × 9 =
18. 18.349 × 999 =
19. 19.67 × 99 =
20. 20.2291 × 99 =
21. 21.191 × 999 =
22. 22.6 × 9 =
23. 23.78 × 99 =
24. 24.69 × 99 =
25. 25.959 × 999 =
26. 26.8 × 99 =
27. 27.139 × 999 =
28. 28.2661 × 99 =
29. 29.684 × 999 =
30. 30.3 × 9 =
31. 31.85 × 99 =
32. 32.22685 × 999 =
33. 33.2 × 9 =
34. 34.171 × 99 =
35. 35.1833 × 99 =
36. 36.969 × 999 =
37. 37.3 × 9 =
38. 38.21141 × 999 =
39. 39.2655 × 99 =
40. 40.18685 × 999 =

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