Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 990 · 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. 1.73 × 99 =
2. 2.95 × 99 =
3. 3.747 × 999 =
4. 4.11 × 99 =
5. 5.136 × 999 =
6. 6.7 × 9 =
7. 7.14922 × 999 =
8. 8.2964 × 99 =
9. 9.52 × 99 =
10. 10.38 × 99 =
11. 11.951 × 999 =
12. 12.16 × 9 =
13. 13.41 × 99 =
14. 14.567 × 99 =
15. 15.37 × 99 =
16. 16.722 × 999 =
17. 17.1002 × 99 =
18. 18.164 × 9 =
19. 19.261 × 9 =
20. 20.15 × 99 =
21. 21.747 × 999 =
22. 22.29 × 99 =
23. 23.138 × 9 =
24. 24.12 × 99 =
25. 25.821 × 999 =
26. 26.5 × 9 =
27. 27.81 × 99 =
28. 28.7 × 9 =
29. 29.66 × 99 =
30. 30.5881 × 999 =
31. 31.24428 × 999 =
32. 32.198 × 9 =
33. 33.6 × 99 =
34. 34.8 × 9 =
35. 35.5 × 9 =
36. 36.778 × 999 =
37. 37.225 × 99 =
38. 38.1989 × 999 =
39. 39.42 × 99 =
40. 40.4 × 9 =

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