Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 447 · 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. 1.169 × 999 =
2. 2.93 × 99 =
3. 3.119 × 9 =
4. 4.321 × 999 =
5. 5.488 × 99 =
6. 6.385 × 999 =
7. 7.2 × 9 =
8. 8.126 × 9 =
9. 9.21858 × 999 =
10. 10.354 × 99 =
11. 11.95 × 99 =
12. 12.8 × 9 =
13. 13.707 × 99 =
14. 14.29 × 999 =
15. 15.134 × 9 =
16. 16.85 × 99 =
17. 17.24 × 9 =
18. 18.2093 × 99 =
19. 19.44 × 999 =
20. 20.6 × 9 =
21. 21.181 × 999 =
22. 22.56 × 99 =
23. 23.3 × 9 =
24. 24.2 × 9 =
25. 25.81 × 99 =
26. 26.194 × 9 =
27. 27.38 × 99 =
28. 28.3 × 9 =
29. 29.6 × 9 =
30. 30.111 × 999 =
31. 31.3 × 9 =
32. 32.407 × 999 =
33. 33.35 × 99 =
34. 34.1008 × 99 =
35. 35.4878 × 999 =
36. 36.11703 × 999 =
37. 37.91 × 99 =
38. 38.6 × 9 =
39. 39.55 × 99 =
40. 40.3 × 9 =

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