Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 206 · 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. 1.78 × 99 =
2. 2.18812 × 999 =
3. 3.75 × 999 =
4. 4.23161 × 999 =
5. 5.16 × 999 =
6. 6.831 × 999 =
7. 7.961 × 999 =
8. 8.155 × 9 =
9. 9.672 × 999 =
10. 10.215 × 999 =
11. 11.4 × 9 =
12. 12.8 × 9 =
13. 13.7 × 9 =
14. 14.147 × 999 =
15. 15.34 × 99 =
16. 16.2 × 9 =
17. 17.7 × 9 =
18. 18.822 × 999 =
19. 19.73 × 99 =
20. 20.15 × 99 =
21. 21.19 × 99 =
22. 22.4 × 9 =
23. 23.8 × 9 =
24. 24.3 × 9 =
25. 25.4 × 9 =
26. 26.391 × 999 =
27. 27.1868 × 99 =
28. 28.209 × 999 =
29. 29.271 × 9 =
30. 30.8 × 9 =
31. 31.68 × 9 =
32. 32.962 × 999 =
33. 33.83 × 99 =
34. 34.24 × 99 =
35. 35.7 × 9 =
36. 36.85 × 99 =
37. 37.6 × 9 =
38. 38.2 × 9 =
39. 39.99 × 999 =
40. 40.734 × 999 =

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