Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 811 · 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. 1.2317 × 99 =
2. 2.71 × 99 =
3. 3.8 × 9 =
4. 4.23635 × 999 =
5. 5.7 × 9 =
6. 6.26628 × 999 =
7. 7.5 × 9 =
8. 8.7 × 9 =
9. 9.53 × 99 =
10. 10.987 × 99 =
11. 11.7 × 9 =
12. 12.4 × 9 =
13. 13.473 × 99 =
14. 14.4 × 9 =
15. 15.762 × 999 =
16. 16.4 × 9 =
17. 17.2041 × 999 =
18. 18.83 × 999 =
19. 19.956 × 999 =
20. 20.2 × 9 =
21. 21.63 × 9 =
22. 22.7 × 9 =
23. 23.149 × 9 =
24. 24.401 × 99 =
25. 25.75 × 99 =
26. 26.6 × 9 =
27. 27.12 × 99 =
28. 28.4992 × 999 =
29. 29.14181 × 999 =
30. 30.33 × 9 =
31. 31.267 × 9 =
32. 32.8 × 9 =
33. 33.6 × 99 =
34. 34.69 × 99 =
35. 35.2 × 9 =
36. 36.4 × 9 =
37. 37.8 × 9 =
38. 38.367 × 99 =
39. 39.58 × 99 =
40. 40.27 × 99 =

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