Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 11 · 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. 1.69 × 99 =
2. 2.95 × 99 =
3. 3.545 × 999 =
4. 4.194 × 9 =
5. 5.63 × 99 =
6. 6.53 × 9 =
7. 7.67 × 99 =
8. 8.271 × 9 =
9. 9.11069 × 999 =
10. 10.8 × 9 =
11. 11.3 × 9 =
12. 12.682 × 999 =
13. 13.42 × 99 =
14. 14.915 × 99 =
15. 15.81 × 99 =
16. 16.2 × 9 =
17. 17.318 × 999 =
18. 18.24615 × 999 =
19. 19.2 × 9 =
20. 20.31 × 99 =
21. 21.3 × 9 =
22. 22.7 × 9 =
23. 23.6 × 9 =
24. 24.8 × 9 =
25. 25.97 × 99 =
26. 26.184 × 999 =
27. 27.5 × 9 =
28. 28.59 × 99 =
29. 29.14 × 99 =
30. 30.745 × 999 =
31. 31.98 × 99 =
32. 32.1558 × 99 =
33. 33.8 × 9 =
34. 34.3 × 9 =
35. 35.54 × 99 =
36. 36.379 × 999 =
37. 37.927 × 999 =
38. 38.81 × 99 =
39. 39.179 × 9 =
40. 40.2744 × 99 =

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