Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 73 · 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. 1.155 × 9 =
2. 2.7 × 9 =
3. 3.4 × 9 =
4. 4.353 × 999 =
5. 5.1151 × 99 =
6. 6.867 × 999 =
7. 7.18 × 99 =
8. 8.71 × 99 =
9. 9.45 × 9 =
10. 10.8 × 9 =
11. 11.5 × 9 =
12. 12.2 × 9 =
13. 13.451 × 99 =
14. 14.2 × 9 =
15. 15.67 × 99 =
16. 16.48 × 99 =
17. 17.83 × 99 =
18. 18.2637 × 99 =
19. 19.153 × 999 =
20. 20.5 × 9 =
21. 21.22 × 99 =
22. 22.171 × 9 =
23. 23.53 × 99 =
24. 24.151 × 9 =
25. 25.52 × 99 =
26. 26.8 × 9 =
27. 27.7 × 9 =
28. 28.486 × 999 =
29. 29.22 × 99 =
30. 30.3773 × 999 =
31. 31.168 × 999 =
32. 32.3 × 9 =
33. 33.511 × 999 =
34. 34.39 × 99 =
35. 35.1962 × 99 =
36. 36.72 × 99 =
37. 37.21 × 999 =
38. 38.6 × 9 =
39. 39.4 × 99 =
40. 40.38 × 99 =

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