Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 162 · 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. 1.89 × 99 =
2. 2.2109 × 99 =
3. 3.264 × 9 =
4. 4.211 × 9 =
5. 5.44 × 99 =
6. 6.91 × 99 =
7. 7.649 × 99 =
8. 8.8 × 9 =
9. 9.7 × 99 =
10. 10.5 × 9 =
11. 11.559 × 999 =
12. 12.7 × 99 =
13. 13.2589 × 99 =
14. 14.55 × 99 =
15. 15.5 × 9 =
16. 16.965 × 999 =
17. 17.431 × 999 =
18. 18.3 × 9 =
19. 19.229 × 999 =
20. 20.26 × 99 =
21. 21.8 × 9 =
22. 22.75 × 99 =
23. 23.486 × 999 =
24. 24.3 × 9 =
25. 25.7 × 9 =
26. 26.911 × 999 =
27. 27.601 × 999 =
28. 28.4 × 99 =
29. 29.2 × 9 =
30. 30.957 × 999 =
31. 31.12968 × 999 =
32. 32.798 × 999 =
33. 33.18291 × 999 =
34. 34.1969 × 99 =
35. 35.3 × 9 =
36. 36.933 × 999 =
37. 37.4 × 9 =
38. 38.34 × 99 =
39. 39.91 × 99 =
40. 40.2 × 9 =

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