Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 339 · 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. 1.17 × 99 =
2. 2.7 × 9 =
3. 3.91 × 99 =
4. 4.95 × 99 =
5. 5.87 × 999 =
6. 6.106 × 999 =
7. 7.7 × 9 =
8. 8.774 × 999 =
9. 9.576 × 999 =
10. 10.222 × 9 =
11. 11.1639 × 99 =
12. 12.58 × 9 =
13. 13.108 × 999 =
14. 14.96 × 99 =
15. 15.217 × 999 =
16. 16.541 × 99 =
17. 17.4 × 9 =
18. 18.9 × 999 =
19. 19.95 × 99 =
20. 20.735 × 99 =
21. 21.81 × 99 =
22. 22.29 × 99 =
23. 23.2 × 9 =
24. 24.2464 × 99 =
25. 25.989 × 999 =
26. 26.164 × 9 =
27. 27.82 × 99 =
28. 28.91 × 99 =
29. 29.18 × 99 =
30. 30.221 × 999 =
31. 31.66 × 999 =
32. 32.844 × 999 =
33. 33.59 × 99 =
34. 34.73 × 99 =
35. 35.32 × 9 =
36. 36.2 × 9 =
37. 37.269 × 9 =
38. 38.65 × 99 =
39. 39.5 × 9 =
40. 40.11 × 99 =

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