Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 801 · 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. 1.24 × 99 =
2. 2.84 × 99 =
3. 3.6 × 99 =
4. 4.29 × 99 =
5. 5.26 × 9 =
6. 6.576 × 999 =
7. 7.5 × 9 =
8. 8.6 × 9 =
9. 9.661 × 999 =
10. 10.22 × 99 =
11. 11.1271 × 99 =
12. 12.893 × 999 =
13. 13.3862 × 999 =
14. 14.26 × 999 =
15. 15.26146 × 999 =
16. 16.76 × 99 =
17. 17.5 × 9 =
18. 18.1824 × 999 =
19. 19.731 × 999 =
20. 20.5 × 9 =
21. 21.23 × 99 =
22. 22.64 × 9 =
23. 23.3812 × 999 =
24. 24.81 × 99 =
25. 25.835 × 999 =
26. 26.91 × 99 =
27. 27.2 × 9 =
28. 28.143 × 999 =
29. 29.29 × 9 =
30. 30.3 × 9 =
31. 31.211 × 999 =
32. 32.82 × 99 =
33. 33.32 × 9 =
34. 34.69 × 999 =
35. 35.6 × 9 =
36. 36.12391 × 999 =
37. 37.34 × 99 =
38. 38.122 × 99 =
39. 39.6 × 99 =
40. 40.8 × 9 =

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