Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 213 · 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. 1.3 × 9 =
2. 2.31 × 99 =
3. 3.54 × 99 =
4. 4.2 × 9 =
5. 5.872 × 999 =
6. 6.716 × 999 =
7. 7.805 × 999 =
8. 8.19436 × 999 =
9. 9.8 × 9 =
10. 10.8 × 9 =
11. 11.29 × 99 =
12. 12.23437 × 999 =
13. 13.885 × 999 =
14. 14.201 × 9 =
15. 15.6 × 9 =
16. 16.6363 × 999 =
17. 17.69 × 99 =
18. 18.8 × 9 =
19. 19.859 × 99 =
20. 20.2724 × 99 =
21. 21.781 × 999 =
22. 22.2 × 9 =
23. 23.389 × 99 =
24. 24.1011 × 99 =
25. 25.59 × 99 =
26. 26.28 × 99 =
27. 27.8 × 9 =
28. 28.62 × 99 =
29. 29.4 × 9 =
30. 30.6 × 9 =
31. 31.75 × 99 =
32. 32.229 × 9 =
33. 33.1531 × 99 =
34. 34.7 × 9 =
35. 35.48 × 99 =
36. 36.2 × 9 =
37. 37.61 × 99 =
38. 38.48 × 99 =
39. 39.49 × 999 =
40. 40.52 × 9 =

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