Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 891 · 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. 1.88 × 99 =
2. 2.1371 × 99 =
3. 3.51 × 999 =
4. 4.864 × 999 =
5. 5.11 × 99 =
6. 6.179 × 9 =
7. 7.83 × 99 =
8. 8.16193 × 999 =
9. 9.125 × 9 =
10. 10.21 × 99 =
11. 11.206 × 999 =
12. 12.15 × 999 =
13. 13.98 × 99 =
14. 14.13 × 99 =
15. 15.9 × 99 =
16. 16.123 × 9 =
17. 17.8779 × 999 =
18. 18.18 × 99 =
19. 19.45 × 99 =
20. 20.926 × 99 =
21. 21.853 × 999 =
22. 22.5 × 9 =
23. 23.76 × 9 =
24. 24.412 × 999 =
25. 25.53 × 9 =
26. 26.113 × 9 =
27. 27.465 × 999 =
28. 28.43 × 99 =
29. 29.4 × 9 =
30. 30.232 × 9 =
31. 31.74 × 9 =
32. 32.81 × 999 =
33. 33.66 × 99 =
34. 34.39 × 99 =
35. 35.212 × 999 =
36. 36.11631 × 999 =
37. 37.21 × 99 =
38. 38.55 × 99 =
39. 39.707 × 999 =
40. 40.7 × 9 =

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