Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 414 · 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. 1.58 × 9 =
2. 2.2 × 9 =
3. 3.7 × 9 =
4. 4.2 × 9 =
5. 5.5 × 9 =
6. 6.18115 × 999 =
7. 7.966 × 999 =
8. 8.8 × 9 =
9. 9.33 × 99 =
10. 10.4 × 9 =
11. 11.2207 × 99 =
12. 12.7 × 9 =
13. 13.2171 × 999 =
14. 14.1819 × 99 =
15. 15.51 × 99 =
16. 16.482 × 999 =
17. 17.2171 × 99 =
18. 18.149 × 9 =
19. 19.23 × 99 =
20. 20.584 × 999 =
21. 21.13346 × 999 =
22. 22.7 × 9 =
23. 23.3 × 9 =
24. 24.136 × 9 =
25. 25.4 × 9 =
26. 26.8 × 9 =
27. 27.29 × 999 =
28. 28.10422 × 999 =
29. 29.857 × 999 =
30. 30.5 × 9 =
31. 31.32 × 999 =
32. 32.3 × 9 =
33. 33.2395 × 99 =
34. 34.19 × 9 =
35. 35.173 × 999 =
36. 36.404 × 999 =
37. 37.2 × 9 =
38. 38.88 × 99 =
39. 39.97 × 99 =
40. 40.21 × 99 =

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