Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 2 · 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. 1.2722 × 99 =
2. 2.7 × 9 =
3. 3.13171 × 999 =
4. 4.3 × 9 =
5. 5.3 × 9 =
6. 6.751 × 999 =
7. 7.8 × 9 =
8. 8.783 × 999 =
9. 9.196 × 999 =
10. 10.235 × 999 =
11. 11.605 × 999 =
12. 12.8 × 9 =
13. 13.6 × 9 =
14. 14.27296 × 999 =
15. 15.2588 × 99 =
16. 16.12 × 99 =
17. 17.5 × 9 =
18. 18.787 × 99 =
19. 19.231 × 999 =
20. 20.84 × 999 =
21. 21.215 × 9 =
22. 22.331 × 999 =
23. 23.701 × 999 =
24. 24.1073 × 99 =
25. 25.857 × 99 =
26. 26.401 × 999 =
27. 27.81 × 9 =
28. 28.1755 × 99 =
29. 29.52 × 99 =
30. 30.9 × 99 =
31. 31.7 × 9 =
32. 32.7 × 9 =
33. 33.6221 × 999 =
34. 34.835 × 999 =
35. 35.3 × 9 =
36. 36.82 × 99 =
37. 37.5 × 9 =
38. 38.453 × 99 =
39. 39.571 × 999 =
40. 40.208 × 9 =

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