Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 709 · 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. 1.51 × 99 =
2. 2.41 × 99 =
3. 3.564 × 999 =
4. 4.7 × 9 =
5. 5.42 × 99 =
6. 6.63 × 99 =
7. 7.5 × 9 =
8. 8.232 × 9 =
9. 9.44 × 99 =
10. 10.52 × 99 =
11. 11.191 × 9 =
12. 12.24 × 99 =
13. 13.139 × 9 =
14. 14.7 × 9 =
15. 15.241 × 99 =
16. 16.234 × 999 =
17. 17.3 × 9 =
18. 18.36 × 99 =
19. 19.32 × 99 =
20. 20.1747 × 99 =
21. 21.4 × 9 =
22. 22.6613 × 999 =
23. 23.56 × 9 =
24. 24.108 × 9 =
25. 25.2641 × 99 =
26. 26.58 × 99 =
27. 27.1825 × 99 =
28. 28.92 × 99 =
29. 29.963 × 99 =
30. 30.24039 × 999 =
31. 31.87 × 99 =
32. 32.3 × 9 =
33. 33.3 × 9 =
34. 34.3 × 9 =
35. 35.26945 × 999 =
36. 36.1793 × 99 =
37. 37.47 × 999 =
38. 38.2 × 9 =
39. 39.8 × 9 =
40. 40.203 × 99 =

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