Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 504 · 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. 1.7 × 99 =
2. 2.24172 × 999 =
3. 3.2 × 9 =
4. 4.261 × 999 =
5. 5.4 × 9 =
6. 6.61 × 99 =
7. 7.2852 × 99 =
8. 8.4 × 9 =
9. 9.172 × 9 =
10. 10.189 × 999 =
11. 11.4 × 9 =
12. 12.7 × 9 =
13. 13.6 × 9 =
14. 14.361 × 999 =
15. 15.5 × 9 =
16. 16.72 × 99 =
17. 17.7 × 9 =
18. 18.171 × 9 =
19. 19.3 × 9 =
20. 20.39 × 99 =
21. 21.7 × 9 =
22. 22.937 × 999 =
23. 23.151 × 9 =
24. 24.3 × 9 =
25. 25.2 × 9 =
26. 26.291 × 999 =
27. 27.62 × 9 =
28. 28.8208 × 999 =
29. 29.3 × 9 =
30. 30.131 × 9 =
31. 31.207 × 9 =
32. 32.7 × 9 =
33. 33.28 × 99 =
34. 34.7 × 9 =
35. 35.77 × 99 =
36. 36.7 × 9 =
37. 37.611 × 999 =
38. 38.22 × 99 =
39. 39.7 × 99 =
40. 40.83 × 99 =

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