Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 361 · 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. 1.572 × 999 =
2. 2.131 × 9 =
3. 3.4 × 9 =
4. 4.75 × 99 =
5. 5.561 × 999 =
6. 6.5 × 9 =
7. 7.1748 × 99 =
8. 8.64 × 99 =
9. 9.1441 × 99 =
10. 10.45 × 99 =
11. 11.6 × 9 =
12. 12.5 × 99 =
13. 13.23 × 99 =
14. 14.4 × 9 =
15. 15.973 × 999 =
16. 16.92 × 9 =
17. 17.27 × 99 =
18. 18.8 × 9 =
19. 19.8187 × 999 =
20. 20.86 × 99 =
21. 21.257 × 999 =
22. 22.57 × 99 =
23. 23.2192 × 99 =
24. 24.4 × 9 =
25. 25.1936 × 99 =
26. 26.257 × 999 =
27. 27.9 × 99 =
28. 28.4332 × 999 =
29. 29.11 × 99 =
30. 30.5 × 9 =
31. 31.7 × 9 =
32. 32.91 × 999 =
33. 33.4 × 9 =
34. 34.18 × 99 =
35. 35.35 × 9 =
36. 36.81 × 99 =
37. 37.3 × 9 =
38. 38.71 × 99 =
39. 39.8 × 9 =
40. 40.41 × 99 =

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