Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 482 · 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. 1.21 × 99 =
2. 2.94 × 99 =
3. 3.596 × 999 =
4. 4.205 × 9 =
5. 5.7 × 9 =
6. 6.966 × 99 =
7. 7.331 × 999 =
8. 8.72 × 99 =
9. 9.65 × 99 =
10. 10.98 × 99 =
11. 11.144 × 9 =
12. 12.37 × 999 =
13. 13.36 × 99 =
14. 14.27 × 999 =
15. 15.38 × 99 =
16. 16.562 × 999 =
17. 17.204 × 999 =
18. 18.5 × 9 =
19. 19.1345 × 99 =
20. 20.2233 × 99 =
21. 21.49 × 99 =
22. 22.6 × 9 =
23. 23.169 × 999 =
24. 24.33 × 999 =
25. 25.2 × 9 =
26. 26.36 × 99 =
27. 27.45 × 99 =
28. 28.8 × 99 =
29. 29.88 × 9 =
30. 30.53 × 999 =
31. 31.864 × 999 =
32. 32.4 × 9 =
33. 33.451 × 999 =
34. 34.6 × 99 =
35. 35.71 × 9 =
36. 36.18 × 99 =
37. 37.11927 × 999 =
38. 38.13481 × 999 =
39. 39.66 × 99 =
40. 40.1082 × 99 =

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