Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 105 · 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. 1.7 × 9 =
2. 2.5 × 9 =
3. 3.86 × 99 =
4. 4.606 × 999 =
5. 5.5 × 9 =
6. 6.5 × 9 =
7. 7.767 × 999 =
8. 8.71 × 99 =
9. 9.51 × 999 =
10. 10.912 × 99 =
11. 11.3 × 9 =
12. 12.3 × 9 =
13. 13.25 × 9 =
14. 14.8 × 9 =
15. 15.16 × 99 =
16. 16.24 × 9 =
17. 17.5 × 9 =
18. 18.4 × 9 =
19. 19.174 × 9 =
20. 20.143 × 9 =
21. 21.35 × 99 =
22. 22.4 × 9 =
23. 23.11 × 99 =
24. 24.41 × 99 =
25. 25.115 × 999 =
26. 26.332 × 999 =
27. 27.96 × 999 =
28. 28.838 × 999 =
29. 29.45 × 99 =
30. 30.15 × 99 =
31. 31.2243 × 999 =
32. 32.31 × 99 =
33. 33.7 × 99 =
34. 34.185 × 999 =
35. 35.263 × 99 =
36. 36.6 × 9 =
37. 37.89 × 99 =
38. 38.7 × 99 =
39. 39.29 × 99 =
40. 40.94 × 9 =

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