Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 651 · 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. 1.7 × 99 =
2. 2.267 × 9 =
3. 3.861 × 999 =
4. 4.1301 × 99 =
5. 5.5391 × 999 =
6. 6.63 × 99 =
7. 7.92 × 99 =
8. 8.571 × 99 =
9. 9.2941 × 99 =
10. 10.2508 × 99 =
11. 11.91 × 99 =
12. 12.2651 × 99 =
13. 13.4 × 9 =
14. 14.5 × 999 =
15. 15.17023 × 999 =
16. 16.86 × 99 =
17. 17.28371 × 999 =
18. 18.502 × 99 =
19. 19.3 × 9 =
20. 20.4 × 9 =
21. 21.2 × 9 =
22. 22.61 × 99 =
23. 23.1512 × 99 =
24. 24.46 × 99 =
25. 25.32 × 999 =
26. 26.12 × 99 =
27. 27.117 × 999 =
28. 28.64 × 99 =
29. 29.67 × 99 =
30. 30.27571 × 999 =
31. 31.3 × 9 =
32. 32.3 × 9 =
33. 33.5581 × 999 =
34. 34.1441 × 99 =
35. 35.1379 × 999 =
36. 36.17 × 99 =
37. 37.65 × 99 =
38. 38.43 × 99 =
39. 39.622 × 999 =
40. 40.13 × 99 =

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