Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 839 · 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. 1.178 × 999 =
2. 2.253 × 999 =
3. 3.5 × 9 =
4. 4.21 × 99 =
5. 5.20883 × 999 =
6. 6.18 × 99 =
7. 7.179 × 9 =
8. 8.2 × 9 =
9. 9.34 × 99 =
10. 10.697 × 999 =
11. 11.61 × 99 =
12. 12.555 × 999 =
13. 13.524 × 99 =
14. 14.1716 × 99 =
15. 15.71 × 99 =
16. 16.978 × 999 =
17. 17.5 × 9 =
18. 18.3 × 9 =
19. 19.995 × 999 =
20. 20.7 × 9 =
21. 21.7 × 9 =
22. 22.4 × 9 =
23. 23.2 × 9 =
24. 24.59 × 99 =
25. 25.93 × 9 =
26. 26.449 × 999 =
27. 27.171 × 9 =
28. 28.108 × 999 =
29. 29.118 × 999 =
30. 30.2875 × 999 =
31. 31.166 × 999 =
32. 32.431 × 999 =
33. 33.12 × 99 =
34. 34.1031 × 999 =
35. 35.58 × 999 =
36. 36.8 × 9 =
37. 37.31 × 9 =
38. 38.767 × 999 =
39. 39.972 × 99 =
40. 40.2568 × 99 =

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