Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 808 · 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. 1.83 × 99 =
2. 2.3 × 9 =
3. 3.987 × 999 =
4. 4.23293 × 999 =
5. 5.29173 × 999 =
6. 6.11 × 99 =
7. 7.1906 × 99 =
8. 8.3 × 9 =
9. 9.71 × 99 =
10. 10.2 × 9 =
11. 11.2 × 9 =
12. 12.6 × 9 =
13. 13.3 × 9 =
14. 14.42 × 99 =
15. 15.881 × 999 =
16. 16.71 × 99 =
17. 17.2 × 9 =
18. 18.5 × 9 =
19. 19.10415 × 999 =
20. 20.59 × 99 =
21. 21.161 × 999 =
22. 22.213 × 9 =
23. 23.42 × 999 =
24. 24.14 × 99 =
25. 25.256 × 9 =
26. 26.12 × 9 =
27. 27.1166 × 999 =
28. 28.222 × 999 =
29. 29.38 × 99 =
30. 30.2949 × 99 =
31. 31.5 × 9 =
32. 32.4 × 9 =
33. 33.386 × 999 =
34. 34.78 × 99 =
35. 35.61 × 99 =
36. 36.692 × 999 =
37. 37.51 × 99 =
38. 38.61 × 99 =
39. 39.5 × 9 =
40. 40.4 × 99 =

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