Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 97 · 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. 1.5 × 9 =
2. 2.8 × 9 =
3. 3.222 × 999 =
4. 4.411 × 999 =
5. 5.362 × 99 =
6. 6.6 × 9 =
7. 7.799 × 999 =
8. 8.611 × 999 =
9. 9.63 × 99 =
10. 10.357 × 999 =
11. 11.1432 × 99 =
12. 12.4 × 9 =
13. 13.105 × 9 =
14. 14.39 × 99 =
15. 15.24 × 99 =
16. 16.74 × 99 =
17. 17.2 × 9 =
18. 18.884 × 999 =
19. 19.4 × 9 =
20. 20.4 × 9 =
21. 21.8 × 9 =
22. 22.233 × 999 =
23. 23.5 × 9 =
24. 24.6 × 99 =
25. 25.8 × 9 =
26. 26.17519 × 999 =
27. 27.473 × 999 =
28. 28.269 × 9 =
29. 29.184 × 9 =
30. 30.53 × 99 =
31. 31.7 × 9 =
32. 32.7 × 9 =
33. 33.66 × 99 =
34. 34.29 × 99 =
35. 35.2775 × 99 =
36. 36.872 × 999 =
37. 37.454 × 999 =
38. 38.305 × 99 =
39. 39.198 × 9 =
40. 40.98 × 99 =

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