Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 71 · 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. 1.3 × 9 =
2. 2.7 × 9 =
3. 3.1671 × 99 =
4. 4.85 × 99 =
5. 5.728 × 999 =
6. 6.63 × 999 =
7. 7.74 × 99 =
8. 8.721 × 99 =
9. 9.81 × 99 =
10. 10.88 × 99 =
11. 11.92 × 99 =
12. 12.7 × 9 =
13. 13.71 × 99 =
14. 14.28 × 99 =
15. 15.14 × 99 =
16. 16.817 × 99 =
17. 17.62 × 99 =
18. 18.248 × 999 =
19. 19.2 × 9 =
20. 20.19108 × 999 =
21. 21.369 × 999 =
22. 22.215 × 999 =
23. 23.29149 × 999 =
24. 24.388 × 999 =
25. 25.35 × 99 =
26. 26.91 × 99 =
27. 27.31 × 99 =
28. 28.88 × 99 =
29. 29.5 × 9 =
30. 30.785 × 999 =
31. 31.2097 × 99 =
32. 32.381 × 999 =
33. 33.1205 × 99 =
34. 34.21 × 99 =
35. 35.5 × 9 =
36. 36.73 × 99 =
37. 37.7 × 9 =
38. 38.91 × 99 =
39. 39.65 × 99 =
40. 40.87 × 99 =

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