Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 730 · 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. 1.169 × 999 =
2. 2.1058 × 99 =
3. 3.1987 × 99 =
4. 4.564 × 999 =
5. 5.91 × 99 =
6. 6.63 × 99 =
7. 7.577 × 99 =
8. 8.12493 × 999 =
9. 9.57 × 99 =
10. 10.6 × 9 =
11. 11.735 × 999 =
12. 12.3 × 9 =
13. 13.1988 × 99 =
14. 14.97 × 99 =
15. 15.4017 × 999 =
16. 16.1518 × 99 =
17. 17.2451 × 99 =
18. 18.87 × 99 =
19. 19.18302 × 999 =
20. 20.2 × 9 =
21. 21.2 × 9 =
22. 22.17237 × 999 =
23. 23.242 × 9 =
24. 24.103 × 999 =
25. 25.163 × 999 =
26. 26.28 × 99 =
27. 27.21 × 99 =
28. 28.884 × 999 =
29. 29.8 × 99 =
30. 30.1681 × 99 =
31. 31.76 × 99 =
32. 32.331 × 999 =
33. 33.319 × 999 =
34. 34.91 × 99 =
35. 35.5 × 9 =
36. 36.13005 × 999 =
37. 37.868 × 99 =
38. 38.261 × 9 =
39. 39.502 × 999 =
40. 40.72 × 99 =

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