Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 978 · 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. 1.11 × 99 =
2. 2.6731 × 999 =
3. 3.1798 × 99 =
4. 4.5 × 9 =
5. 5.61 × 99 =
6. 6.93 × 99 =
7. 7.31 × 99 =
8. 8.77 × 99 =
9. 9.137 × 999 =
10. 10.7 × 9 =
11. 11.11582 × 999 =
12. 12.165 × 9 =
13. 13.4 × 9 =
14. 14.8 × 9 =
15. 15.75 × 99 =
16. 16.78 × 9 =
17. 17.18798 × 999 =
18. 18.25 × 99 =
19. 19.89 × 99 =
20. 20.4 × 9 =
21. 21.77 × 99 =
22. 22.225 × 9 =
23. 23.6086 × 999 =
24. 24.58 × 9 =
25. 25.2566 × 99 =
26. 26.6 × 9 =
27. 27.8 × 9 =
28. 28.25 × 99 =
29. 29.89 × 99 =
30. 30.26 × 99 =
31. 31.167 × 9 =
32. 32.7 × 9 =
33. 33.511 × 999 =
34. 34.8 × 9 =
35. 35.8 × 9 =
36. 36.489 × 999 =
37. 37.803 × 999 =
38. 38.2752 × 999 =
39. 39.6 × 9 =
40. 40.24354 × 999 =

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