Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 633 · 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. 1.41 × 99 =
2. 2.26 × 99 =
3. 3.143 × 9 =
4. 4.108 × 9 =
5. 5.56 × 99 =
6. 6.63 × 99 =
7. 7.22821 × 999 =
8. 8.16 × 99 =
9. 9.5 × 9 =
10. 10.22526 × 999 =
11. 11.88 × 99 =
12. 12.4 × 9 =
13. 13.3 × 9 =
14. 14.2459 × 99 =
15. 15.21 × 99 =
16. 16.1298 × 99 =
17. 17.18724 × 999 =
18. 18.758 × 999 =
19. 19.3 × 99 =
20. 20.2 × 9 =
21. 21.59 × 99 =
22. 22.193 × 9 =
23. 23.81 × 9 =
24. 24.109 × 999 =
25. 25.106 × 999 =
26. 26.26611 × 999 =
27. 27.2 × 99 =
28. 28.5 × 9 =
29. 29.81 × 99 =
30. 30.82 × 99 =
31. 31.11 × 99 =
32. 32.626 × 999 =
33. 33.2 × 9 =
34. 34.2 × 9 =
35. 35.1311 × 99 =
36. 36.79 × 9 =
37. 37.4174 × 999 =
38. 38.7 × 9 =
39. 39.4 × 9 =
40. 40.281 × 99 =

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