Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 886 · 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. 1.2 × 9 =
2. 2.394 × 999 =
3. 3.91 × 999 =
4. 4.31 × 99 =
5. 5.18 × 99 =
6. 6.22 × 99 =
7. 7.76 × 99 =
8. 8.2 × 99 =
9. 9.41 × 999 =
10. 10.5 × 9 =
11. 11.4 × 9 =
12. 12.12 × 99 =
13. 13.641 × 999 =
14. 14.34 × 99 =
15. 15.1138 × 99 =
16. 16.10001 × 999 =
17. 17.59 × 99 =
18. 18.18513 × 999 =
19. 19.29 × 99 =
20. 20.81 × 99 =
21. 21.2 × 9 =
22. 22.12 × 99 =
23. 23.88 × 99 =
24. 24.71 × 99 =
25. 25.1501 × 99 =
26. 26.81 × 99 =
27. 27.748 × 999 =
28. 28.6 × 9 =
29. 29.46 × 99 =
30. 30.211 × 9 =
31. 31.767 × 999 =
32. 32.78 × 99 =
33. 33.3 × 99 =
34. 34.92 × 99 =
35. 35.251 × 9 =
36. 36.92 × 99 =
37. 37.228 × 99 =
38. 38.17 × 99 =
39. 39.46 × 99 =
40. 40.712 × 999 =

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