Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 853 · 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. 1.89 × 9 =
2. 2.6 × 9 =
3. 3.441 × 99 =
4. 4.671 × 999 =
5. 5.18 × 99 =
6. 6.7 × 9 =
7. 7.55 × 99 =
8. 8.28 × 999 =
9. 9.186 × 999 =
10. 10.2 × 9 =
11. 11.23 × 99 =
12. 12.2 × 9 =
13. 13.4 × 9 =
14. 14.431 × 999 =
15. 15.54 × 99 =
16. 16.1825 × 99 =
17. 17.2 × 9 =
18. 18.29 × 99 =
19. 19.1242 × 99 =
20. 20.3 × 9 =
21. 21.526 × 999 =
22. 22.2906 × 99 =
23. 23.81 × 999 =
24. 24.66 × 99 =
25. 25.47 × 99 =
26. 26.96 × 99 =
27. 27.2595 × 99 =
28. 28.431 × 99 =
29. 29.47 × 999 =
30. 30.41 × 99 =
31. 31.47 × 999 =
32. 32.4 × 99 =
33. 33.11409 × 999 =
34. 34.8 × 9 =
35. 35.2891 × 99 =
36. 36.59 × 99 =
37. 37.3 × 9 =
38. 38.42 × 99 =
39. 39.121 × 999 =
40. 40.4 × 9 =

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