Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 368 · 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. 1.20717 × 999 =
2. 2.28 × 99 =
3. 3.27072 × 999 =
4. 4.54 × 99 =
5. 5.611 × 999 =
6. 6.89 × 9 =
7. 7.752 × 999 =
8. 8.8 × 9 =
9. 9.3 × 9 =
10. 10.9339 × 999 =
11. 11.644 × 999 =
12. 12.34 × 99 =
13. 13.7 × 9 =
14. 14.7 × 9 =
15. 15.29 × 9 =
16. 16.198 × 99 =
17. 17.41 × 9 =
18. 18.62 × 99 =
19. 19.17731 × 999 =
20. 20.2 × 9 =
21. 21.55 × 99 =
22. 22.8 × 9 =
23. 23.41 × 99 =
24. 24.6 × 9 =
25. 25.334 × 999 =
26. 26.661 × 999 =
27. 27.439 × 999 =
28. 28.16 × 99 =
29. 29.17 × 99 =
30. 30.98 × 99 =
31. 31.4852 × 999 =
32. 32.52 × 99 =
33. 33.764 × 999 =
34. 34.888 × 999 =
35. 35.431 × 999 =
36. 36.29 × 99 =
37. 37.101 × 999 =
38. 38.15 × 99 =
39. 39.478 × 999 =
40. 40.853 × 999 =

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