Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 306 · 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. 1.65 × 99 =
2. 2.3 × 9 =
3. 3.7 × 9 =
4. 4.131 × 9 =
5. 5.23 × 99 =
6. 6.49 × 99 =
7. 7.4 × 9 =
8. 8.2755 × 99 =
9. 9.77 × 99 =
10. 10.21889 × 999 =
11. 11.8 × 9 =
12. 12.18995 × 999 =
13. 13.598 × 999 =
14. 14.7 × 9 =
15. 15.6 × 9 =
16. 16.242 × 9 =
17. 17.74 × 9 =
18. 18.82 × 99 =
19. 19.6 × 9 =
20. 20.202 × 999 =
21. 21.834 × 999 =
22. 22.2966 × 99 =
23. 23.131 × 9 =
24. 24.49 × 99 =
25. 25.5 × 9 =
26. 26.172 × 9 =
27. 27.831 × 999 =
28. 28.85 × 999 =
29. 29.14 × 99 =
30. 30.7 × 99 =
31. 31.99 × 999 =
32. 32.532 × 999 =
33. 33.83 × 99 =
34. 34.77 × 9 =
35. 35.373 × 999 =
36. 36.131 × 9 =
37. 37.6 × 9 =
38. 38.54 × 999 =
39. 39.8529 × 999 =
40. 40.3 × 9 =

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