Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 691 · 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. 1.11 × 99 =
2. 2.8 × 9 =
3. 3.3 × 9 =
4. 4.181 × 9 =
5. 5.17 × 99 =
6. 6.5 × 9 =
7. 7.11 × 99 =
8. 8.7 × 9 =
9. 9.4 × 99 =
10. 10.3464 × 999 =
11. 11.7 × 9 =
12. 12.4 × 9 =
13. 13.57 × 99 =
14. 14.381 × 999 =
15. 15.4 × 9 =
16. 16.5 × 9 =
17. 17.6 × 9 =
18. 18.549 × 999 =
19. 19.903 × 999 =
20. 20.142 × 999 =
21. 21.2 × 9 =
22. 22.19927 × 999 =
23. 23.119 × 9 =
24. 24.173 × 999 =
25. 25.7 × 9 =
26. 26.51 × 99 =
27. 27.1243 × 999 =
28. 28.7119 × 999 =
29. 29.3 × 9 =
30. 30.46 × 99 =
31. 31.75 × 99 =
32. 32.8 × 9 =
33. 33.271 × 9 =
34. 34.22396 × 999 =
35. 35.137 × 999 =
36. 36.73 × 99 =
37. 37.27835 × 999 =
38. 38.51 × 99 =
39. 39.4 × 9 =
40. 40.5 × 9 =

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