Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 323 · 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. 1.39 × 99 =
2. 2.98 × 99 =
3. 3.34 × 99 =
4. 4.3 × 9 =
5. 5.39 × 999 =
6. 6.242 × 9 =
7. 7.3 × 9 =
8. 8.24488 × 999 =
9. 9.947 × 999 =
10. 10.6 × 99 =
11. 11.6 × 99 =
12. 12.761 × 999 =
13. 13.7 × 9 =
14. 14.2031 × 99 =
15. 15.97 × 99 =
16. 16.11 × 99 =
17. 17.835 × 999 =
18. 18.83 × 99 =
19. 19.997 × 999 =
20. 20.2 × 9 =
21. 21.1844 × 99 =
22. 22.41 × 99 =
23. 23.13 × 99 =
24. 24.72 × 99 =
25. 25.195 × 9 =
26. 26.34 × 99 =
27. 27.11 × 99 =
28. 28.499 × 999 =
29. 29.5 × 9 =
30. 30.8 × 9 =
31. 31.683 × 99 =
32. 32.5921 × 999 =
33. 33.3 × 9 =
34. 34.745 × 999 =
35. 35.8 × 9 =
36. 36.4 × 9 =
37. 37.5 × 99 =
38. 38.265 × 9 =
39. 39.4 × 9 =
40. 40.8 × 9 =

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