Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 190 · 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. 1.47 × 99 =
2. 2.916 × 999 =
3. 3.2 × 9 =
4. 4.147 × 9 =
5. 5.456 × 99 =
6. 6.86 × 99 =
7. 7.7 × 99 =
8. 8.108 × 9 =
9. 9.45 × 9 =
10. 10.599 × 999 =
11. 11.3 × 9 =
12. 12.41 × 99 =
13. 13.4 × 9 =
14. 14.4 × 9 =
15. 15.5 × 9 =
16. 16.24 × 99 =
17. 17.5 × 9 =
18. 18.96 × 9 =
19. 19.7891 × 999 =
20. 20.4 × 9 =
21. 21.7 × 9 =
22. 22.238 × 9 =
23. 23.1246 × 99 =
24. 24.57 × 99 =
25. 25.11 × 99 =
26. 26.6 × 9 =
27. 27.178 × 9 =
28. 28.71 × 9 =
29. 29.568 × 999 =
30. 30.344 × 999 =
31. 31.248 × 99 =
32. 32.8 × 9 =
33. 33.7 × 9 =
34. 34.311 × 99 =
35. 35.5 × 9 =
36. 36.37 × 99 =
37. 37.1048 × 99 =
38. 38.14861 × 999 =
39. 39.3 × 9 =
40. 40.506 × 99 =

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