Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 335 · 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. 1.1681 × 99 =
2. 2.3 × 9 =
3. 3.88 × 99 =
4. 4.3 × 9 =
5. 5.19 × 99 =
6. 6.2886 × 99 =
7. 7.7 × 9 =
8. 8.96 × 999 =
9. 9.2502 × 99 =
10. 10.8 × 9 =
11. 11.28 × 99 =
12. 12.786 × 999 =
13. 13.23 × 99 =
14. 14.85 × 99 =
15. 15.111 × 9 =
16. 16.705 × 99 =
17. 17.84 × 9 =
18. 18.554 × 999 =
19. 19.4 × 9 =
20. 20.26 × 99 =
21. 21.3 × 9 =
22. 22.1758 × 99 =
23. 23.759 × 999 =
24. 24.5 × 9 =
25. 25.3145 × 999 =
26. 26.17 × 99 =
27. 27.5 × 9 =
28. 28.41 × 99 =
29. 29.1737 × 99 =
30. 30.4 × 99 =
31. 31.6 × 9 =
32. 32.38 × 99 =
33. 33.4947 × 999 =
34. 34.2 × 9 =
35. 35.3433 × 999 =
36. 36.2 × 9 =
37. 37.43 × 99 =
38. 38.108 × 999 =
39. 39.215 × 99 =
40. 40.8 × 9 =

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