Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 799 · 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. 1.11 × 99 =
2. 2.399 × 99 =
3. 3.8 × 99 =
4. 4.6 × 9 =
5. 5.3 × 9 =
6. 6.94 × 99 =
7. 7.66 × 99 =
8. 8.12 × 99 =
9. 9.5 × 9 =
10. 10.15179 × 999 =
11. 11.97 × 99 =
12. 12.7 × 9 =
13. 13.3 × 9 =
14. 14.11959 × 999 =
15. 15.8 × 9 =
16. 16.7 × 9 =
17. 17.206 × 9 =
18. 18.83 × 99 =
19. 19.25 × 99 =
20. 20.8108 × 999 =
21. 21.431 × 99 =
22. 22.14 × 99 =
23. 23.2 × 9 =
24. 24.2 × 9 =
25. 25.184 × 9 =
26. 26.2 × 9 =
27. 27.5 × 9 =
28. 28.4 × 99 =
29. 29.33 × 99 =
30. 30.2405 × 99 =
31. 31.7 × 9 =
32. 32.44 × 9 =
33. 33.1886 × 99 =
34. 34.95 × 99 =
35. 35.899 × 999 =
36. 36.41 × 999 =
37. 37.6 × 9 =
38. 38.2406 × 99 =
39. 39.76 × 99 =
40. 40.3 × 9 =

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