Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 939 · 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. 1.218 × 9 =
2. 2.5434 × 999 =
3. 3.196 × 9 =
4. 4.7 × 9 =
5. 5.8 × 9 =
6. 6.64 × 9 =
7. 7.812 × 999 =
8. 8.1342 × 99 =
9. 9.39 × 9 =
10. 10.57 × 99 =
11. 11.6 × 9 =
12. 12.716 × 99 =
13. 13.1708 × 99 =
14. 14.2381 × 99 =
15. 15.231 × 9 =
16. 16.4 × 9 =
17. 17.5 × 99 =
18. 18.8 × 9 =
19. 19.2 × 9 =
20. 20.59 × 99 =
21. 21.53 × 999 =
22. 22.67 × 99 =
23. 23.261 × 99 =
24. 24.98 × 99 =
25. 25.163 × 99 =
26. 26.41 × 99 =
27. 27.821 × 99 =
28. 28.7664 × 999 =
29. 29.74 × 9 =
30. 30.7 × 9 =
31. 31.7 × 9 =
32. 32.48 × 99 =
33. 33.57 × 9 =
34. 34.14165 × 999 =
35. 35.79 × 99 =
36. 36.74 × 99 =
37. 37.849 × 999 =
38. 38.29 × 99 =
39. 39.37 × 99 =
40. 40.87 × 99 =

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