Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 618 · 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. 1.89 × 99 =
2. 2.909 × 999 =
3. 3.112 × 999 =
4. 4.11 × 99 =
5. 5.531 × 999 =
6. 6.3 × 9 =
7. 7.2669 × 99 =
8. 8.11 × 99 =
9. 9.19 × 99 =
10. 10.231 × 999 =
11. 11.58 × 9 =
12. 12.913 × 999 =
13. 13.1827 × 99 =
14. 14.12 × 99 =
15. 15.941 × 999 =
16. 16.515 × 99 =
17. 17.19 × 99 =
18. 18.237 × 9 =
19. 19.55 × 99 =
20. 20.1671 × 99 =
21. 21.7 × 9 =
22. 22.1159 × 99 =
23. 23.478 × 999 =
24. 24.2 × 9 =
25. 25.3 × 9 =
26. 26.59 × 999 =
27. 27.41 × 99 =
28. 28.2 × 9 =
29. 29.394 × 99 =
30. 30.55 × 99 =
31. 31.38 × 99 =
32. 32.157 × 999 =
33. 33.9196 × 999 =
34. 34.3 × 9 =
35. 35.17 × 99 =
36. 36.682 × 999 =
37. 37.245 × 999 =
38. 38.589 × 99 =
39. 39.12 × 99 =
40. 40.1371 × 99 =

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