Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 163 · 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. 1.29488 × 999 =
2. 2.1143 × 99 =
3. 3.3 × 9 =
4. 4.2 × 9 =
5. 5.2 × 9 =
6. 6.51 × 99 =
7. 7.5 × 9 =
8. 8.7 × 9 =
9. 9.29239 × 999 =
10. 10.6 × 9 =
11. 11.7 × 99 =
12. 12.5 × 9 =
13. 13.92 × 9 =
14. 14.3 × 9 =
15. 15.89 × 9 =
16. 16.17788 × 999 =
17. 17.3 × 9 =
18. 18.255 × 999 =
19. 19.7 × 9 =
20. 20.6 × 9 =
21. 21.925 × 999 =
22. 22.3 × 9 =
23. 23.7 × 9 =
24. 24.195 × 9 =
25. 25.85 × 99 =
26. 26.568 × 999 =
27. 27.42 × 99 =
28. 28.62 × 99 =
29. 29.303 × 999 =
30. 30.3 × 9 =
31. 31.174 × 9 =
32. 32.4 × 9 =
33. 33.13202 × 999 =
34. 34.711 × 999 =
35. 35.24 × 99 =
36. 36.429 × 99 =
37. 37.1341 × 99 =
38. 38.168 × 999 =
39. 39.321 × 99 =
40. 40.15 × 999 =

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