Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 591 · 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. 1.232 × 9 =
2. 2.982 × 999 =
3. 3.939 × 999 =
4. 4.6 × 9 =
5. 5.32 × 99 =
6. 6.4 × 9 =
7. 7.2 × 9 =
8. 8.1005 × 99 =
9. 9.2 × 9 =
10. 10.3 × 9 =
11. 11.791 × 999 =
12. 12.995 × 999 =
13. 13.2518 × 99 =
14. 14.19868 × 999 =
15. 15.7959 × 999 =
16. 16.2 × 9 =
17. 17.819 × 99 =
18. 18.791 × 99 =
19. 19.77 × 99 =
20. 20.18 × 999 =
21. 21.65 × 9 =
22. 22.2 × 9 =
23. 23.19 × 99 =
24. 24.29125 × 999 =
25. 25.8 × 9 =
26. 26.26162 × 999 =
27. 27.49 × 99 =
28. 28.638 × 999 =
29. 29.262 × 9 =
30. 30.34 × 9 =
31. 31.16 × 9 =
32. 32.15986 × 999 =
33. 33.2827 × 99 =
34. 34.702 × 99 =
35. 35.5 × 9 =
36. 36.95 × 99 =
37. 37.316 × 999 =
38. 38.781 × 99 =
39. 39.252 × 9 =
40. 40.8 × 9 =

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