Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 820 · 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. 1.861 × 99 =
2. 2.995 × 999 =
3. 3.925 × 999 =
4. 4.13 × 99 =
5. 5.5 × 9 =
6. 6.73 × 9 =
7. 7.811 × 999 =
8. 8.25 × 99 =
9. 9.108 × 9 =
10. 10.3 × 99 =
11. 11.246 × 9 =
12. 12.561 × 999 =
13. 13.2789 × 99 =
14. 14.58 × 99 =
15. 15.2 × 9 =
16. 16.2781 × 99 =
17. 17.5 × 9 =
18. 18.5 × 9 =
19. 19.27 × 99 =
20. 20.5 × 9 =
21. 21.5 × 9 =
22. 22.6 × 9 =
23. 23.71 × 99 =
24. 24.2 × 99 =
25. 25.213 × 999 =
26. 26.34 × 99 =
27. 27.8 × 9 =
28. 28.729 × 999 =
29. 29.1018 × 99 =
30. 30.271 × 999 =
31. 31.561 × 99 =
32. 32.161 × 999 =
33. 33.82 × 99 =
34. 34.5 × 9 =
35. 35.5 × 99 =
36. 36.894 × 999 =
37. 37.214 × 9 =
38. 38.2 × 9 =
39. 39.8 × 9 =
40. 40.136 × 999 =

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