Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 83 · 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. 1.97 × 9 =
2. 2.5 × 9 =
3. 3.104 × 9 =
4. 4.399 × 999 =
5. 5.978 × 999 =
6. 6.6 × 9 =
7. 7.891 × 999 =
8. 8.47 × 99 =
9. 9.5 × 9 =
10. 10.41 × 99 =
11. 11.29719 × 999 =
12. 12.206 × 9 =
13. 13.514 × 999 =
14. 14.213 × 999 =
15. 15.8 × 9 =
16. 16.511 × 999 =
17. 17.79 × 99 =
18. 18.211 × 9 =
19. 19.595 × 999 =
20. 20.19531 × 999 =
21. 21.465 × 999 =
22. 22.15631 × 999 =
23. 23.6 × 9 =
24. 24.815 × 999 =
25. 25.681 × 999 =
26. 26.1411 × 99 =
27. 27.2196 × 99 =
28. 28.181 × 9 =
29. 29.1093 × 99 =
30. 30.5 × 9 =
31. 31.221 × 9 =
32. 32.3 × 9 =
33. 33.3 × 99 =
34. 34.5 × 9 =
35. 35.821 × 999 =
36. 36.73 × 99 =
37. 37.87 × 99 =
38. 38.2 × 9 =
39. 39.5 × 9 =
40. 40.41 × 99 =

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