Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 305 · 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. 1.1371 × 99 =
2. 2.14833 × 999 =
3. 3.8 × 9 =
4. 4.93 × 99 =
5. 5.4 × 9 =
6. 6.2 × 9 =
7. 7.2509 × 99 =
8. 8.2117 × 99 =
9. 9.4 × 9 =
10. 10.877 × 999 =
11. 11.4 × 9 =
12. 12.6 × 9 =
13. 13.975 × 999 =
14. 14.75 × 99 =
15. 15.91 × 99 =
16. 16.7 × 9 =
17. 17.31 × 9 =
18. 18.231 × 99 =
19. 19.604 × 99 =
20. 20.31 × 99 =
21. 21.42 × 99 =
22. 22.271 × 999 =
23. 23.7 × 9 =
24. 24.98 × 99 =
25. 25.1962 × 99 =
26. 26.2 × 9 =
27. 27.3 × 9 =
28. 28.995 × 99 =
29. 29.86 × 9 =
30. 30.1342 × 99 =
31. 31.97 × 99 =
32. 32.26141 × 999 =
33. 33.3 × 9 =
34. 34.91 × 99 =
35. 35.66 × 99 =
36. 36.5 × 9 =
37. 37.22143 × 999 =
38. 38.3 × 9 =
39. 39.35 × 99 =
40. 40.212 × 999 =

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