Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 322 · 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. 1.31 × 99 =
2. 2.11 × 99 =
3. 3.3 × 9 =
4. 4.4 × 9 =
5. 5.76 × 9 =
6. 6.5 × 9 =
7. 7.2429 × 99 =
8. 8.683 × 999 =
9. 9.238 × 9 =
10. 10.82 × 9 =
11. 11.921 × 999 =
12. 12.92 × 99 =
13. 13.729 × 999 =
14. 14.6 × 9 =
15. 15.945 × 999 =
16. 16.274 × 999 =
17. 17.658 × 999 =
18. 18.3 × 9 =
19. 19.338 × 999 =
20. 20.3 × 9 =
21. 21.152 × 999 =
22. 22.42 × 9 =
23. 23.5 × 99 =
24. 24.81 × 9 =
25. 25.41 × 99 =
26. 26.621 × 999 =
27. 27.617 × 999 =
28. 28.42 × 9 =
29. 29.109 × 9 =
30. 30.86 × 9 =
31. 31.2 × 9 =
32. 32.12 × 99 =
33. 33.881 × 999 =
34. 34.23 × 99 =
35. 35.172 × 999 =
36. 36.11 × 99 =
37. 37.72 × 99 =
38. 38.801 × 999 =
39. 39.24 × 99 =
40. 40.142 × 999 =

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