Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 33 · 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. 1.61 × 9 =
2. 2.7348 × 999 =
3. 3.891 × 999 =
4. 4.157 × 999 =
5. 5.221 × 9 =
6. 6.13 × 99 =
7. 7.877 × 999 =
8. 8.467 × 999 =
9. 9.242 × 9 =
10. 10.321 × 999 =
11. 11.65 × 99 =
12. 12.5 × 9 =
13. 13.13225 × 999 =
14. 14.4 × 9 =
15. 15.54 × 99 =
16. 16.8 × 99 =
17. 17.3 × 9 =
18. 18.755 × 999 =
19. 19.21 × 99 =
20. 20.232 × 9 =
21. 21.4 × 99 =
22. 22.24256 × 999 =
23. 23.73 × 9 =
24. 24.791 × 999 =
25. 25.6 × 9 =
26. 26.2 × 99 =
27. 27.96 × 99 =
28. 28.264 × 9 =
29. 29.439 × 999 =
30. 30.5 × 9 =
31. 31.4 × 9 =
32. 32.4 × 9 =
33. 33.36 × 99 =
34. 34.149 × 9 =
35. 35.278 × 999 =
36. 36.323 × 99 =
37. 37.5 × 9 =
38. 38.24 × 99 =
39. 39.77 × 99 =
40. 40.27 × 99 =

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