Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 178 · 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. 1.372 × 99 =
2. 2.128 × 9 =
3. 3.371 × 999 =
4. 4.2 × 9 =
5. 5.81 × 99 =
6. 6.987 × 99 =
7. 7.3 × 9 =
8. 8.81 × 99 =
9. 9.237 × 9 =
10. 10.8 × 9 =
11. 11.11 × 99 =
12. 12.56 × 999 =
13. 13.15 × 99 =
14. 14.779 × 999 =
15. 15.865 × 999 =
16. 16.145 × 9 =
17. 17.2 × 9 =
18. 18.714 × 999 =
19. 19.6 × 9 =
20. 20.7 × 9 =
21. 21.203 × 9 =
22. 22.2 × 9 =
23. 23.8 × 9 =
24. 24.13 × 99 =
25. 25.5 × 9 =
26. 26.4 × 9 =
27. 27.331 × 999 =
28. 28.352 × 999 =
29. 29.52 × 99 =
30. 30.108 × 9 =
31. 31.19 × 99 =
32. 32.223 × 9 =
33. 33.31 × 99 =
34. 34.6 × 9 =
35. 35.85 × 99 =
36. 36.24 × 99 =
37. 37.8 × 9 =
38. 38.7 × 9 =
39. 39.926 × 999 =
40. 40.115 × 999 =

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