Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 480 · 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. 1.23 × 99 =
2. 2.287 × 999 =
3. 3.5 × 9 =
4. 4.88 × 9 =
5. 5.652 × 999 =
6. 6.8 × 9 =
7. 7.815 × 999 =
8. 8.36 × 99 =
9. 9.129 × 999 =
10. 10.136 × 999 =
11. 11.5 × 9 =
12. 12.2 × 9 =
13. 13.129 × 9 =
14. 14.72 × 99 =
15. 15.8 × 9 =
16. 16.21025 × 999 =
17. 17.24326 × 999 =
18. 18.28 × 9 =
19. 19.68 × 99 =
20. 20.331 × 999 =
21. 21.6 × 9 =
22. 22.6417 × 999 =
23. 23.82 × 99 =
24. 24.4 × 9 =
25. 25.27 × 99 =
26. 26.2 × 9 =
27. 27.2 × 9 =
28. 28.671 × 999 =
29. 29.8 × 99 =
30. 30.4 × 9 =
31. 31.794 × 99 =
32. 32.5 × 9 =
33. 33.301 × 999 =
34. 34.3 × 9 =
35. 35.6 × 99 =
36. 36.261 × 9 =
37. 37.978 × 999 =
38. 38.10888 × 999 =
39. 39.4 × 9 =
40. 40.114 × 9 =

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