Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 471 · 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. 1.28989 × 999 =
2. 2.184 × 9 =
3. 3.58 × 99 =
4. 4.6 × 9 =
5. 5.665 × 999 =
6. 6.46 × 999 =
7. 7.2967 × 999 =
8. 8.21707 × 999 =
9. 9.3 × 9 =
10. 10.3 × 9 =
11. 11.785 × 99 =
12. 12.411 × 999 =
13. 13.471 × 999 =
14. 14.125 × 9 =
15. 15.671 × 999 =
16. 16.38 × 99 =
17. 17.27 × 99 =
18. 18.609 × 999 =
19. 19.28 × 99 =
20. 20.44 × 99 =
21. 21.32 × 99 =
22. 22.27 × 99 =
23. 23.18 × 99 =
24. 24.61 × 9 =
25. 25.2004 × 99 =
26. 26.31 × 99 =
27. 27.76 × 99 =
28. 28.29 × 99 =
29. 29.245 × 9 =
30. 30.754 × 999 =
31. 31.2526 × 99 =
32. 32.121 × 9 =
33. 33.2 × 9 =
34. 34.4 × 9 =
35. 35.2 × 9 =
36. 36.45 × 99 =
37. 37.211 × 9 =
38. 38.28 × 99 =
39. 39.57 × 99 =
40. 40.211 × 9 =

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