Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 869 · 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. 1.137 × 9 =
2. 2.182 × 9 =
3. 3.502 × 99 =
4. 4.85 × 99 =
5. 5.908 × 999 =
6. 6.73 × 99 =
7. 7.909 × 999 =
8. 8.2 × 99 =
9. 9.3 × 99 =
10. 10.44 × 9 =
11. 11.42 × 99 =
12. 12.526 × 999 =
13. 13.69 × 99 =
14. 14.96 × 999 =
15. 15.728 × 999 =
16. 16.646 × 999 =
17. 17.18 × 99 =
18. 18.266 × 9 =
19. 19.166 × 99 =
20. 20.3 × 9 =
21. 21.6757 × 999 =
22. 22.707 × 999 =
23. 23.6 × 9 =
24. 24.1085 × 99 =
25. 25.3 × 9 =
26. 26.8 × 9 =
27. 27.339 × 999 =
28. 28.46 × 99 =
29. 29.992 × 999 =
30. 30.11 × 99 =
31. 31.7 × 9 =
32. 32.1509 × 99 =
33. 33.8 × 9 =
34. 34.35 × 999 =
35. 35.53 × 99 =
36. 36.2436 × 99 =
37. 37.726 × 999 =
38. 38.6 × 9 =
39. 39.366 × 999 =
40. 40.56 × 9 =

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