Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 617 · 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. 1.17 × 99 =
2. 2.292 × 999 =
3. 3.165 × 999 =
4. 4.651 × 99 =
5. 5.146 × 9 =
6. 6.81 × 9 =
7. 7.99 × 9 =
8. 8.18 × 99 =
9. 9.43 × 99 =
10. 10.2 × 9 =
11. 11.252 × 9 =
12. 12.2 × 9 =
13. 13.2791 × 99 =
14. 14.2 × 9 =
15. 15.38 × 99 =
16. 16.10543 × 999 =
17. 17.16 × 99 =
18. 18.43 × 999 =
19. 19.9 × 99 =
20. 20.2 × 9 =
21. 21.46 × 9 =
22. 22.207 × 999 =
23. 23.7 × 9 =
24. 24.8 × 9 =
25. 25.98 × 99 =
26. 26.4 × 9 =
27. 27.15 × 99 =
28. 28.35 × 99 =
29. 29.3 × 9 =
30. 30.768 × 999 =
31. 31.6 × 9 =
32. 32.61 × 9 =
33. 33.818 × 999 =
34. 34.39 × 99 =
35. 35.4225 × 999 =
36. 36.134 × 99 =
37. 37.215 × 999 =
38. 38.2 × 9 =
39. 39.814 × 999 =
40. 40.20569 × 999 =

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