Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 120 · 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. 1.47 × 99 =
2. 2.17421 × 999 =
3. 3.309 × 999 =
4. 4.6 × 9 =
5. 5.86 × 99 =
6. 6.3 × 9 =
7. 7.158 × 9 =
8. 8.2 × 9 =
9. 9.589 × 999 =
10. 10.4 × 9 =
11. 11.21 × 99 =
12. 12.815 × 99 =
13. 13.3 × 9 =
14. 14.6 × 99 =
15. 15.43 × 99 =
16. 16.4 × 9 =
17. 17.95 × 99 =
18. 18.165 × 999 =
19. 19.55 × 99 =
20. 20.3 × 9 =
21. 21.7 × 9 =
22. 22.2 × 9 =
23. 23.551 × 99 =
24. 24.2 × 9 =
25. 25.494 × 999 =
26. 26.81 × 99 =
27. 27.5 × 9 =
28. 28.781 × 999 =
29. 29.6 × 9 =
30. 30.64 × 99 =
31. 31.1867 × 99 =
32. 32.103 × 9 =
33. 33.1099 × 99 =
34. 34.131 × 999 =
35. 35.96 × 9 =
36. 36.177 × 999 =
37. 37.263 × 999 =
38. 38.88 × 99 =
39. 39.627 × 999 =
40. 40.261 × 999 =

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