Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 401 · 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. 1.472 × 999 =
2. 2.35 × 99 =
3. 3.20764 × 999 =
4. 4.47 × 99 =
5. 5.148 × 999 =
6. 6.3 × 9 =
7. 7.21 × 99 =
8. 8.69 × 99 =
9. 9.123 × 9 =
10. 10.109 × 9 =
11. 11.391 × 99 =
12. 12.382 × 999 =
13. 13.8 × 9 =
14. 14.43 × 9 =
15. 15.3 × 9 =
16. 16.47 × 99 =
17. 17.252 × 999 =
18. 18.28388 × 999 =
19. 19.6 × 9 =
20. 20.2308 × 99 =
21. 21.973 × 999 =
22. 22.93 × 9 =
23. 23.78 × 99 =
24. 24.15 × 99 =
25. 25.8 × 9 =
26. 26.28771 × 999 =
27. 27.45 × 9 =
28. 28.59 × 99 =
29. 29.656 × 999 =
30. 30.98 × 99 =
31. 31.8 × 9 =
32. 32.21195 × 999 =
33. 33.53 × 99 =
34. 34.323 × 999 =
35. 35.2 × 9 =
36. 36.122 × 9 =
37. 37.22447 × 999 =
38. 38.185 × 9 =
39. 39.87 × 99 =
40. 40.82 × 99 =

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