Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 508 · 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. 1.706 × 99 =
2. 2.61 × 99 =
3. 3.5 × 9 =
4. 4.84 × 99 =
5. 5.14 × 99 =
6. 6.24 × 999 =
7. 7.222 × 9 =
8. 8.921 × 99 =
9. 9.31 × 99 =
10. 10.15 × 99 =
11. 11.21 × 99 =
12. 12.5 × 9 =
13. 13.567 × 999 =
14. 14.161 × 9 =
15. 15.1673 × 99 =
16. 16.764 × 999 =
17. 17.381 × 999 =
18. 18.77 × 9 =
19. 19.38 × 99 =
20. 20.74 × 99 =
21. 21.26969 × 999 =
22. 22.677 × 999 =
23. 23.1304 × 99 =
24. 24.22 × 9 =
25. 25.31 × 99 =
26. 26.3 × 9 =
27. 27.6 × 9 =
28. 28.4 × 9 =
29. 29.337 × 999 =
30. 30.176 × 9 =
31. 31.65 × 99 =
32. 32.111 × 999 =
33. 33.2 × 9 =
34. 34.2 × 99 =
35. 35.629 × 999 =
36. 36.49 × 9 =
37. 37.9 × 999 =
38. 38.391 × 999 =
39. 39.723 × 999 =
40. 40.174 × 999 =

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