Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 906 · 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. 1.45 × 99 =
2. 2.21 × 99 =
3. 3.701 × 999 =
4. 4.741 × 999 =
5. 5.2 × 9 =
6. 6.7 × 9 =
7. 7.49 × 99 =
8. 8.753 × 999 =
9. 9.62 × 9 =
10. 10.61 × 99 =
11. 11.3 × 9 =
12. 12.43 × 99 =
13. 13.11 × 99 =
14. 14.19324 × 999 =
15. 15.13 × 99 =
16. 16.47 × 99 =
17. 17.3 × 99 =
18. 18.82 × 99 =
19. 19.2 × 9 =
20. 20.692 × 999 =
21. 21.27 × 9 =
22. 22.187 × 99 =
23. 23.128 × 9 =
24. 24.87 × 99 =
25. 25.21 × 99 =
26. 26.594 × 999 =
27. 27.23618 × 999 =
28. 28.5 × 9 =
29. 29.262 × 999 =
30. 30.44 × 99 =
31. 31.76 × 99 =
32. 32.2 × 9 =
33. 33.11 × 99 =
34. 34.85 × 99 =
35. 35.6 × 9 =
36. 36.2256 × 99 =
37. 37.473 × 999 =
38. 38.2553 × 99 =
39. 39.665 × 999 =
40. 40.29 × 99 =

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