Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 878 · 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. 1.8 × 9 =
2. 2.71 × 999 =
3. 3.673 × 999 =
4. 4.13 × 99 =
5. 5.18 × 99 =
6. 6.86 × 99 =
7. 7.7 × 9 =
8. 8.6123 × 999 =
9. 9.157 × 9 =
10. 10.84 × 99 =
11. 11.46 × 99 =
12. 12.54 × 9 =
13. 13.45 × 999 =
14. 14.8 × 9 =
15. 15.12671 × 999 =
16. 16.1929 × 99 =
17. 17.158 × 9 =
18. 18.433 × 99 =
19. 19.225 × 9 =
20. 20.22 × 99 =
21. 21.281 × 999 =
22. 22.73 × 99 =
23. 23.2 × 9 =
24. 24.7 × 9 =
25. 25.13 × 99 =
26. 26.456 × 99 =
27. 27.407 × 999 =
28. 28.11828 × 999 =
29. 29.3 × 9 =
30. 30.3 × 9 =
31. 31.52 × 99 =
32. 32.84 × 99 =
33. 33.2935 × 99 =
34. 34.44 × 99 =
35. 35.7 × 9 =
36. 36.8 × 9 =
37. 37.9012 × 999 =
38. 38.6 × 99 =
39. 39.2 × 9 =
40. 40.712 × 999 =

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