Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 717 · 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. 1.916 × 999 =
2. 2.327 × 999 =
3. 3.211 × 999 =
4. 4.4 × 9 =
5. 5.256 × 999 =
6. 6.7 × 9 =
7. 7.1901 × 99 =
8. 8.741 × 999 =
9. 9.6 × 9 =
10. 10.23 × 999 =
11. 11.6 × 9 =
12. 12.27 × 999 =
13. 13.21 × 99 =
14. 14.9 × 99 =
15. 15.1599 × 99 =
16. 16.751 × 999 =
17. 17.68 × 99 =
18. 18.7 × 9 =
19. 19.985 × 999 =
20. 20.233 × 999 =
21. 21.12 × 99 =
22. 22.198 × 9 =
23. 23.468 × 999 =
24. 24.877 × 999 =
25. 25.2 × 99 =
26. 26.48 × 99 =
27. 27.377 × 999 =
28. 28.55 × 99 =
29. 29.4 × 9 =
30. 30.22371 × 999 =
31. 31.29 × 99 =
32. 32.54 × 99 =
33. 33.3 × 99 =
34. 34.286 × 999 =
35. 35.964 × 999 =
36. 36.241 × 999 =
37. 37.8 × 9 =
38. 38.131 × 999 =
39. 39.128 × 9 =
40. 40.17 × 99 =

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