Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 961 · 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. 1.51 × 99 =
2. 2.23409 × 999 =
3. 3.5 × 9 =
4. 4.33 × 99 =
5. 5.2 × 9 =
6. 6.88 × 99 =
7. 7.615 × 999 =
8. 8.22 × 99 =
9. 9.7 × 9 =
10. 10.856 × 999 =
11. 11.2 × 9 =
12. 12.27 × 9 =
13. 13.27661 × 999 =
14. 14.7 × 9 =
15. 15.957 × 99 =
16. 16.3 × 9 =
17. 17.432 × 999 =
18. 18.23 × 99 =
19. 19.192 × 999 =
20. 20.54 × 99 =
21. 21.1027 × 99 =
22. 22.2 × 9 =
23. 23.391 × 999 =
24. 24.4 × 9 =
25. 25.7 × 9 =
26. 26.171 × 99 =
27. 27.169 × 9 =
28. 28.2 × 9 =
29. 29.25 × 9 =
30. 30.37 × 99 =
31. 31.3 × 9 =
32. 32.2 × 9 =
33. 33.637 × 999 =
34. 34.84 × 99 =
35. 35.2 × 9 =
36. 36.4 × 9 =
37. 37.509 × 99 =
38. 38.1542 × 99 =
39. 39.94 × 999 =
40. 40.102 × 999 =

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