Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 817 · 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. 1.63 × 99 =
2. 2.266 × 9 =
3. 3.1235 × 99 =
4. 4.1778 × 999 =
5. 5.4 × 9 =
6. 6.221 × 999 =
7. 7.21 × 99 =
8. 8.91 × 999 =
9. 9.18 × 99 =
10. 10.6 × 9 =
11. 11.2232 × 999 =
12. 12.49 × 99 =
13. 13.167 × 999 =
14. 14.97 × 99 =
15. 15.718 × 999 =
16. 16.8 × 9 =
17. 17.248 × 9 =
18. 18.75 × 999 =
19. 19.28 × 99 =
20. 20.2 × 9 =
21. 21.8 × 9 =
22. 22.5 × 9 =
23. 23.1485 × 99 =
24. 24.81 × 99 =
25. 25.42 × 99 =
26. 26.8 × 9 =
27. 27.2771 × 99 =
28. 28.11 × 99 =
29. 29.88 × 999 =
30. 30.223 × 9 =
31. 31.59 × 999 =
32. 32.3 × 9 =
33. 33.1462 × 99 =
34. 34.213 × 99 =
35. 35.7 × 9 =
36. 36.14619 × 999 =
37. 37.3 × 9 =
38. 38.7 × 9 =
39. 39.8 × 9 =
40. 40.706 × 999 =

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