Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 147 · 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. 1.2631 × 99 =
2. 2.112 × 99 =
3. 3.352 × 999 =
4. 4.46 × 99 =
5. 5.5 × 9 =
6. 6.467 × 99 =
7. 7.1388 × 999 =
8. 8.4 × 9 =
9. 9.253 × 9 =
10. 10.2 × 9 =
11. 11.803 × 999 =
12. 12.621 × 999 =
13. 13.4 × 9 =
14. 14.44 × 9 =
15. 15.19 × 999 =
16. 16.8414 × 999 =
17. 17.81 × 99 =
18. 18.753 × 99 =
19. 19.3 × 99 =
20. 20.3 × 9 =
21. 21.78 × 99 =
22. 22.10703 × 999 =
23. 23.3 × 9 =
24. 24.61 × 99 =
25. 25.631 × 999 =
26. 26.11 × 99 =
27. 27.6 × 9 =
28. 28.905 × 999 =
29. 29.111 × 999 =
30. 30.3 × 9 =
31. 31.96 × 99 =
32. 32.87 × 99 =
33. 33.16 × 999 =
34. 34.61 × 99 =
35. 35.1669 × 99 =
36. 36.11121 × 999 =
37. 37.837 × 999 =
38. 38.81 × 99 =
39. 39.41 × 99 =
40. 40.991 × 999 =

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