Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 860 · 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. 1.206 × 9 =
2. 2.43 × 99 =
3. 3.39 × 99 =
4. 4.91 × 99 =
5. 5.22 × 99 =
6. 6.66 × 999 =
7. 7.364 × 999 =
8. 8.12 × 99 =
9. 9.8 × 9 =
10. 10.333 × 999 =
11. 11.33 × 99 =
12. 12.62 × 99 =
13. 13.33 × 99 =
14. 14.27 × 99 =
15. 15.26 × 9 =
16. 16.57 × 99 =
17. 17.67 × 99 =
18. 18.407 × 99 =
19. 19.3 × 9 =
20. 20.25 × 99 =
21. 21.5 × 9 =
22. 22.3 × 9 =
23. 23.3 × 9 =
24. 24.73 × 99 =
25. 25.7 × 9 =
26. 26.5 × 99 =
27. 27.6 × 9 =
28. 28.104 × 9 =
29. 29.2046 × 99 =
30. 30.8 × 99 =
31. 31.81 × 99 =
32. 32.43 × 999 =
33. 33.7 × 9 =
34. 34.39 × 99 =
35. 35.21 × 99 =
36. 36.67 × 99 =
37. 37.666 × 999 =
38. 38.11 × 99 =
39. 39.7 × 9 =
40. 40.4 × 9 =

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