Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 957 · 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. 1.61 × 99 =
2. 2.10445 × 999 =
3. 3.95 × 99 =
4. 4.5692 × 999 =
5. 5.3 × 9 =
6. 6.10634 × 999 =
7. 7.1031 × 99 =
8. 8.8 × 9 =
9. 9.871 × 999 =
10. 10.94 × 99 =
11. 11.174 × 9 =
12. 12.7 × 9 =
13. 13.451 × 999 =
14. 14.85 × 9 =
15. 15.43 × 999 =
16. 16.332 × 999 =
17. 17.5 × 9 =
18. 18.22 × 9 =
19. 19.423 × 999 =
20. 20.302 × 999 =
21. 21.2 × 9 =
22. 22.2 × 99 =
23. 23.5 × 9 =
24. 24.21541 × 999 =
25. 25.29 × 99 =
26. 26.13323 × 999 =
27. 27.7 × 9 =
28. 28.41 × 99 =
29. 29.87 × 99 =
30. 30.372 × 999 =
31. 31.8 × 9 =
32. 32.2 × 9 =
33. 33.14 × 9 =
34. 34.98 × 99 =
35. 35.87 × 9 =
36. 36.634 × 999 =
37. 37.21289 × 999 =
38. 38.489 × 99 =
39. 39.2 × 9 =
40. 40.2712 × 99 =

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