Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 431 · 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. 1.33 × 99 =
2. 2.847 × 999 =
3. 3.805 × 999 =
4. 4.91 × 9 =
5. 5.23 × 99 =
6. 6.83 × 99 =
7. 7.176 × 999 =
8. 8.83 × 99 =
9. 9.1816 × 99 =
10. 10.3 × 9 =
11. 11.5 × 9 =
12. 12.199 × 999 =
13. 13.908 × 999 =
14. 14.5 × 9 =
15. 15.89 × 99 =
16. 16.62 × 99 =
17. 17.1835 × 99 =
18. 18.94 × 99 =
19. 19.2738 × 99 =
20. 20.7 × 9 =
21. 21.82 × 99 =
22. 22.6 × 9 =
23. 23.3 × 9 =
24. 24.85 × 99 =
25. 25.56 × 99 =
26. 26.4 × 9 =
27. 27.134 × 9 =
28. 28.2 × 9 =
29. 29.2 × 9 =
30. 30.227 × 9 =
31. 31.6 × 9 =
32. 32.23 × 99 =
33. 33.6674 × 999 =
34. 34.204 × 999 =
35. 35.271 × 999 =
36. 36.609 × 999 =
37. 37.4 × 99 =
38. 38.1221 × 99 =
39. 39.38 × 99 =
40. 40.22 × 999 =

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