Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 653 · 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. 1.21 × 99 =
2. 2.58 × 99 =
3. 3.141 × 999 =
4. 4.3505 × 999 =
5. 5.6 × 9 =
6. 6.3 × 9 =
7. 7.251 × 9 =
8. 8.56 × 99 =
9. 9.136 × 999 =
10. 10.3 × 9 =
11. 11.3 × 9 =
12. 12.151 × 9 =
13. 13.3 × 9 =
14. 14.353 × 999 =
15. 15.11 × 99 =
16. 16.11 × 99 =
17. 17.644 × 999 =
18. 18.72 × 99 =
19. 19.7 × 9 =
20. 20.738 × 999 =
21. 21.2415 × 99 =
22. 22.8 × 9 =
23. 23.295 × 999 =
24. 24.559 × 999 =
25. 25.28 × 99 =
26. 26.3 × 9 =
27. 27.856 × 999 =
28. 28.31 × 99 =
29. 29.24 × 9 =
30. 30.791 × 999 =
31. 31.81 × 9 =
32. 32.255 × 999 =
33. 33.488 × 999 =
34. 34.822 × 999 =
35. 35.818 × 999 =
36. 36.3 × 9 =
37. 37.326 × 999 =
38. 38.558 × 99 =
39. 39.772 × 999 =
40. 40.599 × 99 =

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