Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 419 · 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. 1.7 × 9 =
2. 2.2729 × 99 =
3. 3.3 × 9 =
4. 4.217 × 999 =
5. 5.373 × 999 =
6. 6.309 × 999 =
7. 7.74 × 99 =
8. 8.4 × 9 =
9. 9.7 × 9 =
10. 10.252 × 999 =
11. 11.585 × 99 =
12. 12.968 × 999 =
13. 13.196 × 99 =
14. 14.5 × 9 =
15. 15.19 × 99 =
16. 16.5 × 9 =
17. 17.194 × 999 =
18. 18.243 × 999 =
19. 19.811 × 999 =
20. 20.5 × 9 =
21. 21.3 × 9 =
22. 22.409 × 999 =
23. 23.234 × 999 =
24. 24.7 × 9 =
25. 25.801 × 999 =
26. 26.42 × 99 =
27. 27.401 × 999 =
28. 28.5 × 9 =
29. 29.8 × 9 =
30. 30.766 × 999 =
31. 31.64 × 99 =
32. 32.4254 × 999 =
33. 33.611 × 999 =
34. 34.852 × 99 =
35. 35.7973 × 999 =
36. 36.2 × 9 =
37. 37.75 × 99 =
38. 38.1556 × 99 =
39. 39.44 × 99 =
40. 40.174 × 9 =

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