Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 146 · 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. 1.2051 × 99 =
2. 2.815 × 999 =
3. 3.2 × 9 =
4. 4.334 × 999 =
5. 5.2 × 9 =
6. 6.324 × 999 =
7. 7.6 × 9 =
8. 8.88 × 99 =
9. 9.4 × 99 =
10. 10.842 × 99 =
11. 11.213 × 999 =
12. 12.256 × 9 =
13. 13.111 × 9 =
14. 14.2602 × 999 =
15. 15.236 × 999 =
16. 16.8 × 99 =
17. 17.13708 × 999 =
18. 18.4 × 9 =
19. 19.23 × 99 =
20. 20.4 × 9 =
21. 21.67 × 999 =
22. 22.28859 × 999 =
23. 23.763 × 99 =
24. 24.2029 × 99 =
25. 25.20099 × 999 =
26. 26.3 × 9 =
27. 27.3 × 99 =
28. 28.211 × 999 =
29. 29.3 × 9 =
30. 30.2 × 9 =
31. 31.5 × 9 =
32. 32.4 × 9 =
33. 33.35 × 99 =
34. 34.2 × 9 =
35. 35.3 × 9 =
36. 36.8 × 9 =
37. 37.12 × 9 =
38. 38.67 × 99 =
39. 39.6 × 9 =
40. 40.3 × 9 =

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