Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 715 · 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. 1.686 × 999 =
2. 2.11 × 99 =
3. 3.2 × 9 =
4. 4.42 × 99 =
5. 5.65 × 99 =
6. 6.11 × 99 =
7. 7.57 × 99 =
8. 8.563 × 999 =
9. 9.14 × 99 =
10. 10.7 × 9 =
11. 11.4 × 99 =
12. 12.65 × 99 =
13. 13.1034 × 99 =
14. 14.606 × 99 =
15. 15.5 × 9 =
16. 16.71 × 9 =
17. 17.95 × 9 =
18. 18.78 × 99 =
19. 19.8 × 9 =
20. 20.7 × 9 =
21. 21.1945 × 99 =
22. 22.631 × 999 =
23. 23.2 × 9 =
24. 24.3 × 9 =
25. 25.2 × 9 =
26. 26.7 × 9 =
27. 27.17 × 99 =
28. 28.1729 × 99 =
29. 29.2 × 9 =
30. 30.17 × 9 =
31. 31.947 × 999 =
32. 32.225 × 999 =
33. 33.229 × 9 =
34. 34.627 × 999 =
35. 35.7 × 99 =
36. 36.15288 × 999 =
37. 37.4 × 9 =
38. 38.10558 × 999 =
39. 39.6 × 9 =
40. 40.77 × 99 =

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