Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 587 · 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. 1.2 × 9 =
2. 2.5 × 9 =
3. 3.332 × 999 =
4. 4.152 × 9 =
5. 5.109 × 9 =
6. 6.982 × 999 =
7. 7.6 × 9 =
8. 8.2 × 9 =
9. 9.731 × 999 =
10. 10.44 × 99 =
11. 11.885 × 99 =
12. 12.521 × 99 =
13. 13.15 × 99 =
14. 14.465 × 999 =
15. 15.95 × 9 =
16. 16.24 × 999 =
17. 17.2961 × 999 =
18. 18.2231 × 99 =
19. 19.165 × 99 =
20. 20.77 × 9 =
21. 21.6 × 9 =
22. 22.233 × 9 =
23. 23.7 × 9 =
24. 24.5 × 9 =
25. 25.2643 × 99 =
26. 26.5 × 9 =
27. 27.4 × 9 =
28. 28.74 × 99 =
29. 29.144 × 999 =
30. 30.491 × 999 =
31. 31.764 × 99 =
32. 32.7 × 9 =
33. 33.79 × 99 =
34. 34.8953 × 999 =
35. 35.2 × 9 =
36. 36.2 × 9 =
37. 37.15 × 99 =
38. 38.3 × 9 =
39. 39.159 × 999 =
40. 40.72 × 99 =

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