Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 321 · 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. 1.36 × 99 =
2. 2.2445 × 99 =
3. 3.2 × 9 =
4. 4.55 × 99 =
5. 5.735 × 999 =
6. 6.1351 × 99 =
7. 7.1589 × 99 =
8. 8.199 × 9 =
9. 9.22 × 99 =
10. 10.152 × 9 =
11. 11.4 × 9 =
12. 12.7 × 9 =
13. 13.5 × 9 =
14. 14.3 × 9 =
15. 15.131 × 9 =
16. 16.2 × 9 =
17. 17.754 × 999 =
18. 18.20373 × 999 =
19. 19.1021 × 99 =
20. 20.111 × 999 =
21. 21.404 × 999 =
22. 22.934 × 99 =
23. 23.195 × 99 =
24. 24.71 × 99 =
25. 25.27 × 99 =
26. 26.969 × 999 =
27. 27.6 × 999 =
28. 28.29969 × 999 =
29. 29.805 × 999 =
30. 30.81 × 9 =
31. 31.901 × 99 =
32. 32.4 × 9 =
33. 33.17914 × 999 =
34. 34.83 × 99 =
35. 35.101 × 999 =
36. 36.186 × 999 =
37. 37.2911 × 99 =
38. 38.2191 × 99 =
39. 39.3 × 9 =
40. 40.24896 × 999 =

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