Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 14 · 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. 1.23 × 99 =
2. 2.85 × 99 =
3. 3.82 × 99 =
4. 4.5 × 99 =
5. 5.633 × 999 =
6. 6.8 × 9 =
7. 7.2 × 9 =
8. 8.1275 × 99 =
9. 9.2 × 9 =
10. 10.435 × 99 =
11. 11.7 × 99 =
12. 12.426 × 999 =
13. 13.93 × 99 =
14. 14.318 × 99 =
15. 15.108 × 999 =
16. 16.1237 × 99 =
17. 17.722 × 999 =
18. 18.58 × 99 =
19. 19.4 × 9 =
20. 20.2 × 9 =
21. 21.271 × 999 =
22. 22.2394 × 99 =
23. 23.2 × 9 =
24. 24.27 × 9 =
25. 25.7 × 9 =
26. 26.89 × 99 =
27. 27.15 × 99 =
28. 28.145 × 9 =
29. 29.534 × 999 =
30. 30.163 × 999 =
31. 31.783 × 999 =
32. 32.2131 × 99 =
33. 33.783 × 999 =
34. 34.24801 × 999 =
35. 35.93 × 99 =
36. 36.9557 × 999 =
37. 37.835 × 999 =
38. 38.682 × 999 =
39. 39.41 × 999 =
40. 40.97 × 99 =

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