Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 313 · 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. 1.51 × 99 =
2. 2.2569 × 99 =
3. 3.41 × 9 =
4. 4.215 × 999 =
5. 5.7 × 9 =
6. 6.81 × 99 =
7. 7.53 × 99 =
8. 8.4 × 9 =
9. 9.38 × 99 =
10. 10.8 × 9 =
11. 11.96 × 99 =
12. 12.96 × 99 =
13. 13.154 × 9 =
14. 14.55 × 9 =
15. 15.96 × 9 =
16. 16.167 × 999 =
17. 17.331 × 999 =
18. 18.76 × 99 =
19. 19.4 × 9 =
20. 20.345 × 999 =
21. 21.5 × 9 =
22. 22.55 × 99 =
23. 23.626 × 999 =
24. 24.3 × 9 =
25. 25.6 × 9 =
26. 26.22 × 99 =
27. 27.1907 × 99 =
28. 28.168 × 9 =
29. 29.4 × 9 =
30. 30.12079 × 999 =
31. 31.123 × 999 =
32. 32.19 × 99 =
33. 33.21 × 9 =
34. 34.784 × 999 =
35. 35.23 × 999 =
36. 36.86 × 999 =
37. 37.14 × 9 =
38. 38.637 × 999 =
39. 39.77 × 99 =
40. 40.18 × 99 =

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