Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 151 · 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. 1.7 × 9 =
2. 2.63 × 99 =
3. 3.618 × 999 =
4. 4.8 × 9 =
5. 5.51 × 999 =
6. 6.736 × 999 =
7. 7.54 × 9 =
8. 8.944 × 999 =
9. 9.2137 × 99 =
10. 10.61 × 999 =
11. 11.441 × 999 =
12. 12.36 × 99 =
13. 13.928 × 999 =
14. 14.4 × 9 =
15. 15.36 × 99 =
16. 16.74 × 99 =
17. 17.7 × 9 =
18. 18.748 × 999 =
19. 19.803 × 999 =
20. 20.2183 × 99 =
21. 21.7 × 9 =
22. 22.6 × 9 =
23. 23.6 × 9 =
24. 24.23 × 9 =
25. 25.631 × 999 =
26. 26.8 × 9 =
27. 27.61 × 99 =
28. 28.965 × 999 =
29. 29.1501 × 999 =
30. 30.74 × 99 =
31. 31.7 × 9 =
32. 32.89 × 99 =
33. 33.67 × 99 =
34. 34.746 × 999 =
35. 35.97 × 999 =
36. 36.31 × 99 =
37. 37.1866 × 999 =
38. 38.31 × 9 =
39. 39.795 × 999 =
40. 40.7 × 9 =

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