Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 367 · 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. 1.231 × 999 =
2. 2.56 × 99 =
3. 3.7 × 9 =
4. 4.52 × 99 =
5. 5.329 × 999 =
6. 6.3 × 9 =
7. 7.631 × 999 =
8. 8.12 × 99 =
9. 9.1561 × 99 =
10. 10.781 × 999 =
11. 11.6 × 9 =
12. 12.145 × 999 =
13. 13.22834 × 999 =
14. 14.691 × 999 =
15. 15.732 × 999 =
16. 16.691 × 999 =
17. 17.21 × 99 =
18. 18.11062 × 999 =
19. 19.22 × 99 =
20. 20.46 × 9 =
21. 21.609 × 999 =
22. 22.44 × 99 =
23. 23.7612 × 999 =
24. 24.8 × 9 =
25. 25.89 × 99 =
26. 26.163 × 999 =
27. 27.5 × 99 =
28. 28.118 × 9 =
29. 29.2 × 9 =
30. 30.13998 × 999 =
31. 31.601 × 999 =
32. 32.248 × 999 =
33. 33.7 × 9 =
34. 34.3 × 9 =
35. 35.3 × 9 =
36. 36.6463 × 999 =
37. 37.176 × 999 =
38. 38.5 × 9 =
39. 39.79 × 99 =
40. 40.266 × 999 =

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