Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 831 · 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. 1.68 × 99 =
2. 2.7986 × 999 =
3. 3.4744 × 999 =
4. 4.206 × 9 =
5. 5.75 × 99 =
6. 6.2 × 9 =
7. 7.6 × 99 =
8. 8.19775 × 999 =
9. 9.89 × 99 =
10. 10.6 × 9 =
11. 11.63 × 99 =
12. 12.27954 × 999 =
13. 13.59 × 99 =
14. 14.65 × 9 =
15. 15.46 × 99 =
16. 16.3 × 9 =
17. 17.182 × 9 =
18. 18.8 × 9 =
19. 19.1401 × 99 =
20. 20.5899 × 999 =
21. 21.14 × 99 =
22. 22.5 × 9 =
23. 23.9 × 99 =
24. 24.635 × 999 =
25. 25.76 × 9 =
26. 26.984 × 999 =
27. 27.21426 × 999 =
28. 28.75 × 99 =
29. 29.111 × 9 =
30. 30.71 × 99 =
31. 31.16656 × 999 =
32. 32.669 × 999 =
33. 33.215 × 9 =
34. 34.97 × 99 =
35. 35.17673 × 999 =
36. 36.271 × 99 =
37. 37.321 × 999 =
38. 38.145 × 9 =
39. 39.109 × 9 =
40. 40.619 × 999 =

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