Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 710 · 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. 1.1781 × 99 =
2. 2.431 × 999 =
3. 3.704 × 999 =
4. 4.42 × 999 =
5. 5.83 × 99 =
6. 6.22 × 99 =
7. 7.75 × 99 =
8. 8.59 × 99 =
9. 9.242 × 999 =
10. 10.11 × 99 =
11. 11.743 × 999 =
12. 12.187 × 9 =
13. 13.643 × 999 =
14. 14.2 × 9 =
15. 15.373 × 999 =
16. 16.15 × 9 =
17. 17.7 × 99 =
18. 18.2841 × 99 =
19. 19.339 × 999 =
20. 20.6 × 9 =
21. 21.6 × 9 =
22. 22.11 × 9 =
23. 23.3 × 9 =
24. 24.202 × 9 =
25. 25.71 × 99 =
26. 26.51 × 99 =
27. 27.4 × 9 =
28. 28.278 × 99 =
29. 29.3 × 9 =
30. 30.71 × 9 =
31. 31.82 × 999 =
32. 32.15 × 99 =
33. 33.4 × 9 =
34. 34.23 × 99 =
35. 35.24898 × 999 =
36. 36.71 × 99 =
37. 37.224 × 999 =
38. 38.4 × 9 =
39. 39.524 × 999 =
40. 40.918 × 99 =

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