Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 686 · 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. 1.2 × 9 =
2. 2.7 × 99 =
3. 3.241 × 9 =
4. 4.16553 × 999 =
5. 5.6 × 9 =
6. 6.236 × 999 =
7. 7.4 × 9 =
8. 8.3 × 9 =
9. 9.498 × 999 =
10. 10.6 × 9 =
11. 11.151 × 9 =
12. 12.27 × 99 =
13. 13.7 × 9 =
14. 14.68 × 99 =
15. 15.23 × 99 =
16. 16.14 × 99 =
17. 17.493 × 999 =
18. 18.6 × 999 =
19. 19.3 × 9 =
20. 20.42 × 99 =
21. 21.3 × 9 =
22. 22.13 × 9 =
23. 23.2 × 9 =
24. 24.2 × 9 =
25. 25.34 × 99 =
26. 26.11 × 99 =
27. 27.81 × 99 =
28. 28.751 × 999 =
29. 29.92 × 99 =
30. 30.11 × 99 =
31. 31.5108 × 999 =
32. 32.16 × 999 =
33. 33.59 × 9 =
34. 34.193 × 999 =
35. 35.8 × 9 =
36. 36.11 × 9 =
37. 37.2 × 9 =
38. 38.861 × 999 =
39. 39.216 × 99 =
40. 40.315 × 99 =

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