Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 550 · 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. 1.123 × 9 =
2. 2.41 × 99 =
3. 3.258 × 9 =
4. 4.4 × 9 =
5. 5.437 × 999 =
6. 6.954 × 99 =
7. 7.201 × 9 =
8. 8.75 × 99 =
9. 9.58 × 99 =
10. 10.619 × 999 =
11. 11.58 × 99 =
12. 12.11258 × 999 =
13. 13.56 × 99 =
14. 14.365 × 99 =
15. 15.3 × 9 =
16. 16.6 × 9 =
17. 17.1541 × 99 =
18. 18.2 × 9 =
19. 19.4 × 9 =
20. 20.77 × 99 =
21. 21.3 × 9 =
22. 22.71 × 9 =
23. 23.548 × 999 =
24. 24.301 × 999 =
25. 25.1254 × 99 =
26. 26.8 × 9 =
27. 27.4 × 9 =
28. 28.146 × 9 =
29. 29.95 × 99 =
30. 30.2281 × 999 =
31. 31.4 × 9 =
32. 32.814 × 999 =
33. 33.183 × 9 =
34. 34.32 × 99 =
35. 35.2 × 9 =
36. 36.11 × 99 =
37. 37.2 × 9 =
38. 38.204 × 9 =
39. 39.774 × 999 =
40. 40.807 × 999 =

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