Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 789 · 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. 1.31 × 9 =
2. 2.57 × 99 =
3. 3.4 × 9 =
4. 4.97 × 99 =
5. 5.8 × 9 =
6. 6.2 × 9 =
7. 7.6 × 9 =
8. 8.7501 × 999 =
9. 9.41 × 999 =
10. 10.23 × 9 =
11. 11.6 × 9 =
12. 12.56 × 999 =
13. 13.25638 × 999 =
14. 14.81 × 99 =
15. 15.8 × 99 =
16. 16.4 × 9 =
17. 17.261 × 999 =
18. 18.7 × 9 =
19. 19.65 × 99 =
20. 20.6 × 9 =
21. 21.78 × 99 =
22. 22.487 × 999 =
23. 23.5 × 9 =
24. 24.665 × 999 =
25. 25.16 × 9 =
26. 26.7 × 9 =
27. 27.73 × 99 =
28. 28.8 × 9 =
29. 29.85 × 9 =
30. 30.7 × 9 =
31. 31.7 × 99 =
32. 32.32 × 99 =
33. 33.12 × 99 =
34. 34.84 × 99 =
35. 35.2 × 9 =
36. 36.92 × 999 =
37. 37.203 × 999 =
38. 38.52 × 99 =
39. 39.329 × 999 =
40. 40.61 × 999 =

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