Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 636 · 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. 1.47 × 99 =
2. 2.44 × 99 =
3. 3.8 × 9 =
4. 4.8 × 9 =
5. 5.244 × 9 =
6. 6.71 × 99 =
7. 7.4 × 9 =
8. 8.58 × 999 =
9. 9.3 × 9 =
10. 10.3 × 9 =
11. 11.16 × 9 =
12. 12.222 × 999 =
13. 13.3 × 9 =
14. 14.3 × 9 =
15. 15.629 × 999 =
16. 16.91 × 99 =
17. 17.91 × 99 =
18. 18.973 × 999 =
19. 19.74 × 99 =
20. 20.2 × 9 =
21. 21.8 × 9 =
22. 22.137 × 999 =
23. 23.7 × 9 =
24. 24.4 × 9 =
25. 25.87 × 99 =
26. 26.2 × 9 =
27. 27.38 × 99 =
28. 28.3 × 9 =
29. 29.17 × 99 =
30. 30.23 × 99 =
31. 31.7 × 9 =
32. 32.2 × 9 =
33. 33.8 × 9 =
34. 34.264 × 9 =
35. 35.7 × 9 =
36. 36.25072 × 999 =
37. 37.97 × 9 =
38. 38.53 × 999 =
39. 39.86 × 99 =
40. 40.76 × 99 =

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