Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 20 · 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. 1.35 × 99 =
2. 2.879 × 999 =
3. 3.526 × 999 =
4. 4.29 × 99 =
5. 5.989 × 99 =
6. 6.2 × 9 =
7. 7.2 × 9 =
8. 8.482 × 999 =
9. 9.5 × 9 =
10. 10.7 × 9 =
11. 11.656 × 999 =
12. 12.7895 × 999 =
13. 13.1729 × 99 =
14. 14.108 × 9 =
15. 15.928 × 999 =
16. 16.92 × 99 =
17. 17.98 × 99 =
18. 18.4 × 9 =
19. 19.37 × 99 =
20. 20.7141 × 999 =
21. 21.75 × 99 =
22. 22.4 × 9 =
23. 23.53 × 99 =
24. 24.102 × 9 =
25. 25.52 × 9 =
26. 26.6 × 9 =
27. 27.2 × 9 =
28. 28.618 × 999 =
29. 29.2 × 9 =
30. 30.909 × 999 =
31. 31.81 × 99 =
32. 32.944 × 99 =
33. 33.55 × 99 =
34. 34.421 × 999 =
35. 35.343 × 99 =
36. 36.5 × 99 =
37. 37.21 × 99 =
38. 38.1269 × 99 =
39. 39.2294 × 99 =
40. 40.3 × 9 =

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