Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 638 · 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. 1.44 × 99 =
2. 2.8 × 9 =
3. 3.398 × 999 =
4. 4.5 × 99 =
5. 5.18 × 999 =
6. 6.3 × 9 =
7. 7.225 × 9 =
8. 8.81 × 999 =
9. 9.6 × 9 =
10. 10.3 × 99 =
11. 11.71 × 99 =
12. 12.39 × 99 =
13. 13.326 × 999 =
14. 14.246 × 999 =
15. 15.366 × 99 =
16. 16.31 × 99 =
17. 17.2 × 9 =
18. 18.8 × 9 =
19. 19.61 × 999 =
20. 20.54 × 99 =
21. 21.1243 × 99 =
22. 22.216 × 999 =
23. 23.201 × 999 =
24. 24.772 × 999 =
25. 25.28 × 9 =
26. 26.3 × 9 =
27. 27.171 × 9 =
28. 28.28 × 99 =
29. 29.2133 × 99 =
30. 30.994 × 999 =
31. 31.11 × 99 =
32. 32.669 × 999 =
33. 33.8 × 99 =
34. 34.6 × 9 =
35. 35.501 × 999 =
36. 36.58 × 99 =
37. 37.6 × 9 =
38. 38.4 × 9 =
39. 39.2082 × 99 =
40. 40.8 × 9 =

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