Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 781 · 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. 1.4 × 9 =
2. 2.137 × 9 =
3. 3.912 × 999 =
4. 4.9837 × 999 =
5. 5.8 × 99 =
6. 6.2 × 9 =
7. 7.61 × 99 =
8. 8.11046 × 999 =
9. 9.2 × 9 =
10. 10.9 × 99 =
11. 11.133 × 9 =
12. 12.2501 × 999 =
13. 13.5 × 9 =
14. 14.46 × 99 =
15. 15.69 × 99 =
16. 16.84 × 99 =
17. 17.27 × 99 =
18. 18.799 × 999 =
19. 19.56 × 99 =
20. 20.47 × 99 =
21. 21.31 × 99 =
22. 22.982 × 999 =
23. 23.55 × 9 =
24. 24.427 × 999 =
25. 25.81 × 99 =
26. 26.5 × 9 =
27. 27.8 × 9 =
28. 28.164 × 9 =
29. 29.6 × 9 =
30. 30.549 × 999 =
31. 31.35 × 99 =
32. 32.4 × 9 =
33. 33.266 × 9 =
34. 34.5 × 9 =
35. 35.3 × 9 =
36. 36.1647 × 99 =
37. 37.74 × 99 =
38. 38.27473 × 999 =
39. 39.2 × 9 =
40. 40.8 × 99 =

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