Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 191 · 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. 1.3 × 9 =
2. 2.715 × 999 =
3. 3.14 × 99 =
4. 4.7 × 99 =
5. 5.53 × 99 =
6. 6.2 × 9 =
7. 7.1289 × 99 =
8. 8.8 × 9 =
9. 9.28918 × 999 =
10. 10.226 × 999 =
11. 11.8 × 9 =
12. 12.4 × 9 =
13. 13.41 × 99 =
14. 14.145 × 99 =
15. 15.65 × 99 =
16. 16.56 × 99 =
17. 17.23 × 99 =
18. 18.5 × 9 =
19. 19.1315 × 999 =
20. 20.11 × 99 =
21. 21.2 × 9 =
22. 22.53 × 99 =
23. 23.8 × 9 =
24. 24.3 × 9 =
25. 25.174 × 9 =
26. 26.2 × 9 =
27. 27.246 × 99 =
28. 28.58 × 99 =
29. 29.643 × 99 =
30. 30.94 × 9 =
31. 31.179 × 999 =
32. 32.908 × 999 =
33. 33.6 × 999 =
34. 34.252 × 9 =
35. 35.19 × 99 =
36. 36.6 × 9 =
37. 37.21 × 99 =
38. 38.49 × 99 =
39. 39.11 × 99 =
40. 40.43 × 99 =

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