Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 999 · 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. 1.6 × 99 =
2. 2.7 × 9 =
3. 3.36 × 99 =
4. 4.43 × 99 =
5. 5.646 × 999 =
6. 6.16 × 9 =
7. 7.683 × 999 =
8. 8.7 × 9 =
9. 9.342 × 999 =
10. 10.2 × 9 =
11. 11.5 × 9 =
12. 12.32 × 99 =
13. 13.29 × 99 =
14. 14.432 × 999 =
15. 15.8 × 9 =
16. 16.6 × 999 =
17. 17.74 × 99 =
18. 18.61 × 99 =
19. 19.4 × 9 =
20. 20.1118 × 99 =
21. 21.7 × 9 =
22. 22.1826 × 99 =
23. 23.51 × 99 =
24. 24.88 × 99 =
25. 25.4 × 9 =
26. 26.2 × 99 =
27. 27.971 × 999 =
28. 28.41 × 99 =
29. 29.432 × 999 =
30. 30.872 × 999 =
31. 31.22621 × 999 =
32. 32.38 × 99 =
33. 33.6 × 9 =
34. 34.5 × 9 =
35. 35.3 × 9 =
36. 36.3 × 9 =
37. 37.84 × 9 =
38. 38.44 × 99 =
39. 39.6 × 9 =
40. 40.12606 × 999 =

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