Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 630 · 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. 1.64 × 99 =
2. 2.5 × 9 =
3. 3.66 × 99 =
4. 4.412 × 999 =
5. 5.681 × 999 =
6. 6.154 × 999 =
7. 7.941 × 999 =
8. 8.6 × 9 =
9. 9.2 × 9 =
10. 10.7 × 9 =
11. 11.4 × 9 =
12. 12.35 × 99 =
13. 13.8 × 9 =
14. 14.19075 × 999 =
15. 15.88 × 99 =
16. 16.216 × 9 =
17. 17.18 × 99 =
18. 18.5 × 9 =
19. 19.21 × 99 =
20. 20.118 × 9 =
21. 21.21 × 99 =
22. 22.16 × 99 =
23. 23.147 × 9 =
24. 24.31 × 99 =
25. 25.801 × 999 =
26. 26.8 × 9 =
27. 27.11247 × 999 =
28. 28.224 × 9 =
29. 29.86 × 99 =
30. 30.3 × 9 =
31. 31.22 × 999 =
32. 32.44 × 99 =
33. 33.4 × 9 =
34. 34.31 × 99 =
35. 35.5 × 9 =
36. 36.875 × 999 =
37. 37.6 × 9 =
38. 38.6 × 9 =
39. 39.4 × 9 =
40. 40.5 × 9 =

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