Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 656 · 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. 1.999 × 99 =
2. 2.7 × 9 =
3. 3.36 × 99 =
4. 4.28706 × 999 =
5. 5.28997 × 999 =
6. 6.4 × 9 =
7. 7.164 × 999 =
8. 8.573 × 999 =
9. 9.54 × 99 =
10. 10.58 × 9 =
11. 11.2193 × 99 =
12. 12.167 × 9 =
13. 13.2593 × 99 =
14. 14.63 × 99 =
15. 15.123 × 9 =
16. 16.26 × 99 =
17. 17.1237 × 99 =
18. 18.613 × 999 =
19. 19.244 × 999 =
20. 20.56 × 99 =
21. 21.866 × 99 =
22. 22.27 × 9 =
23. 23.8152 × 999 =
24. 24.51 × 99 =
25. 25.24 × 99 =
26. 26.71 × 99 =
27. 27.151 × 999 =
28. 28.2 × 9 =
29. 29.4 × 9 =
30. 30.288 × 999 =
31. 31.24221 × 999 =
32. 32.95 × 99 =
33. 33.4 × 9 =
34. 34.5 × 9 =
35. 35.593 × 999 =
36. 36.374 × 99 =
37. 37.2834 × 99 =
38. 38.74 × 99 =
39. 39.1556 × 99 =
40. 40.6 × 9 =

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