Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 733 · 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. 1.174 × 9 =
2. 2.115 × 999 =
3. 3.83 × 99 =
4. 4.205 × 99 =
5. 5.22 × 99 =
6. 6.3 × 99 =
7. 7.28824 × 999 =
8. 8.231 × 9 =
9. 9.36 × 99 =
10. 10.7 × 9 =
11. 11.12 × 999 =
12. 12.1885 × 99 =
13. 13.21861 × 999 =
14. 14.1939 × 99 =
15. 15.614 × 999 =
16. 16.8 × 9 =
17. 17.404 × 999 =
18. 18.271 × 9 =
19. 19.94 × 99 =
20. 20.29125 × 999 =
21. 21.25 × 99 =
22. 22.899 × 999 =
23. 23.13676 × 999 =
24. 24.62 × 9 =
25. 25.269 × 9 =
26. 26.45 × 99 =
27. 27.29755 × 999 =
28. 28.7 × 9 =
29. 29.9 × 99 =
30. 30.2003 × 99 =
31. 31.266 × 9 =
32. 32.6 × 9 =
33. 33.297 × 999 =
34. 34.56 × 99 =
35. 35.91 × 99 =
36. 36.84 × 999 =
37. 37.56 × 99 =
38. 38.3 × 9 =
39. 39.14082 × 999 =
40. 40.3 × 9 =

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