Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 225 · 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. 1.88 × 99 =
2. 2.169 × 999 =
3. 3.83 × 99 =
4. 4.3 × 9 =
5. 5.8 × 9 =
6. 6.551 × 999 =
7. 7.6 × 9 =
8. 8.733 × 999 =
9. 9.8 × 9 =
10. 10.2 × 9 =
11. 11.79 × 99 =
12. 12.62 × 99 =
13. 13.7 × 9 =
14. 14.924 × 999 =
15. 15.811 × 99 =
16. 16.3 × 99 =
17. 17.1802 × 99 =
18. 18.8 × 9 =
19. 19.63 × 9 =
20. 20.181 × 9 =
21. 21.41 × 99 =
22. 22.3391 × 999 =
23. 23.67 × 99 =
24. 24.21 × 99 =
25. 25.4 × 9 =
26. 26.29 × 99 =
27. 27.15 × 9 =
28. 28.206 × 9 =
29. 29.66 × 9 =
30. 30.391 × 999 =
31. 31.62 × 99 =
32. 32.395 × 999 =
33. 33.13923 × 999 =
34. 34.2 × 9 =
35. 35.1695 × 99 =
36. 36.58 × 99 =
37. 37.56 × 99 =
38. 38.93 × 99 =
39. 39.166 × 999 =
40. 40.964 × 999 =

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