Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 39 · 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. 1.41 × 99 =
2. 2.281 × 99 =
3. 3.41 × 99 =
4. 4.168 × 999 =
5. 5.4 × 9 =
6. 6.708 × 99 =
7. 7.49 × 99 =
8. 8.6 × 9 =
9. 9.11 × 99 =
10. 10.48 × 99 =
11. 11.94 × 99 =
12. 12.648 × 999 =
13. 13.63 × 99 =
14. 14.946 × 999 =
15. 15.51 × 9 =
16. 16.8 × 9 =
17. 17.2 × 9 =
18. 18.429 × 999 =
19. 19.71 × 99 =
20. 20.8 × 9 =
21. 21.2819 × 99 =
22. 22.1083 × 99 =
23. 23.511 × 999 =
24. 24.703 × 999 =
25. 25.3 × 9 =
26. 26.23 × 99 =
27. 27.22 × 99 =
28. 28.98 × 9 =
29. 29.7 × 9 =
30. 30.399 × 999 =
31. 31.67 × 99 =
32. 32.2 × 9 =
33. 33.3 × 9 =
34. 34.81 × 999 =
35. 35.51 × 99 =
36. 36.4 × 9 =
37. 37.61 × 99 =
38. 38.27 × 999 =
39. 39.18 × 99 =
40. 40.1151 × 99 =

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