Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 207 · 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. 1.37 × 9 =
2. 2.41 × 99 =
3. 3.8 × 9 =
4. 4.194 × 9 =
5. 5.4 × 9 =
6. 6.6 × 9 =
7. 7.221 × 999 =
8. 8.91 × 99 =
9. 9.7 × 9 =
10. 10.201 × 999 =
11. 11.5 × 9 =
12. 12.877 × 999 =
13. 13.492 × 999 =
14. 14.8044 × 999 =
15. 15.43 × 9 =
16. 16.126 × 999 =
17. 17.1913 × 99 =
18. 18.3 × 9 =
19. 19.1831 × 99 =
20. 20.91 × 99 =
21. 21.851 × 99 =
22. 22.4 × 9 =
23. 23.281 × 999 =
24. 24.5 × 9 =
25. 25.72 × 99 =
26. 26.221 × 9 =
27. 27.5221 × 999 =
28. 28.6278 × 999 =
29. 29.39 × 9 =
30. 30.63 × 99 =
31. 31.363 × 999 =
32. 32.23791 × 999 =
33. 33.636 × 999 =
34. 34.6 × 9 =
35. 35.484 × 999 =
36. 36.6 × 9 =
37. 37.1202 × 99 =
38. 38.7 × 9 =
39. 39.77 × 9 =
40. 40.4 × 9 =

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