Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 499 · 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. 1.85 × 99 =
2. 2.11689 × 999 =
3. 3.78 × 999 =
4. 4.71 × 99 =
5. 5.3 × 9 =
6. 6.8 × 9 =
7. 7.59 × 99 =
8. 8.742 × 999 =
9. 9.8412 × 999 =
10. 10.7 × 9 =
11. 11.81 × 99 =
12. 12.8 × 99 =
13. 13.8 × 9 =
14. 14.86 × 999 =
15. 15.21 × 99 =
16. 16.27 × 99 =
17. 17.8 × 9 =
18. 18.513 × 99 =
19. 19.2003 × 999 =
20. 20.2 × 9 =
21. 21.3 × 9 =
22. 22.8 × 9 =
23. 23.101 × 9 =
24. 24.735 × 999 =
25. 25.18 × 99 =
26. 26.2503 × 99 =
27. 27.688 × 999 =
28. 28.9706 × 999 =
29. 29.4 × 9 =
30. 30.63 × 99 =
31. 31.636 × 99 =
32. 32.205 × 9 =
33. 33.5 × 99 =
34. 34.175 × 9 =
35. 35.1583 × 999 =
36. 36.203 × 999 =
37. 37.2035 × 99 =
38. 38.702 × 999 =
39. 39.2 × 9 =
40. 40.52 × 99 =

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