Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 88 · 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. 1.7 × 9 =
2. 2.649 × 99 =
3. 3.7 × 9 =
4. 4.41 × 99 =
5. 5.3 × 9 =
6. 6.973 × 99 =
7. 7.12 × 99 =
8. 8.8 × 9 =
9. 9.2843 × 99 =
10. 10.24941 × 999 =
11. 11.71 × 99 =
12. 12.171 × 99 =
13. 13.49 × 99 =
14. 14.2 × 99 =
15. 15.4 × 9 =
16. 16.853 × 999 =
17. 17.4 × 9 =
18. 18.111 × 999 =
19. 19.4 × 9 =
20. 20.101 × 9 =
21. 21.6 × 9 =
22. 22.111 × 999 =
23. 23.7 × 9 =
24. 24.911 × 999 =
25. 25.511 × 99 =
26. 26.55 × 99 =
27. 27.49 × 99 =
28. 28.9 × 999 =
29. 29.7 × 9 =
30. 30.73 × 99 =
31. 31.73 × 99 =
32. 32.47 × 99 =
33. 33.224 × 999 =
34. 34.1876 × 99 =
35. 35.1701 × 99 =
36. 36.2 × 9 =
37. 37.42 × 99 =
38. 38.163 × 9 =
39. 39.686 × 999 =
40. 40.1009 × 99 =

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