Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 721 · 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. 1.554 × 999 =
2. 2.371 × 999 =
3. 3.3 × 9 =
4. 4.2699 × 99 =
5. 5.7 × 9 =
6. 6.8 × 99 =
7. 7.644 × 999 =
8. 8.202 × 999 =
9. 9.6 × 9 =
10. 10.2388 × 99 =
11. 11.7 × 9 =
12. 12.71 × 99 =
13. 13.4 × 9 =
14. 14.21 × 99 =
15. 15.452 × 999 =
16. 16.3 × 9 =
17. 17.8228 × 999 =
18. 18.6 × 9 =
19. 19.84 × 9 =
20. 20.3 × 9 =
21. 21.5 × 9 =
22. 22.138 × 999 =
23. 23.3 × 9 =
24. 24.84 × 99 =
25. 25.1217 × 99 =
26. 26.29 × 99 =
27. 27.623 × 999 =
28. 28.61 × 99 =
29. 29.258 × 999 =
30. 30.779 × 999 =
31. 31.577 × 999 =
32. 32.4 × 9 =
33. 33.8 × 9 =
34. 34.844 × 999 =
35. 35.152 × 9 =
36. 36.151 × 99 =
37. 37.32 × 99 =
38. 38.41 × 99 =
39. 39.5 × 9 =
40. 40.2 × 9 =

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