Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 188 · 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. 1.1051 × 99 =
2. 2.289 × 999 =
3. 3.7 × 9 =
4. 4.68 × 99 =
5. 5.4 × 9 =
6. 6.331 × 99 =
7. 7.5 × 9 =
8. 8.53 × 99 =
9. 9.7 × 9 =
10. 10.1022 × 99 =
11. 11.724 × 999 =
12. 12.808 × 999 =
13. 13.16 × 9 =
14. 14.86 × 99 =
15. 15.245 × 999 =
16. 16.18 × 99 =
17. 17.3 × 9 =
18. 18.64 × 99 =
19. 19.44 × 9 =
20. 20.51 × 99 =
21. 21.8 × 9 =
22. 22.1862 × 99 =
23. 23.2 × 9 =
24. 24.5 × 9 =
25. 25.21 × 9 =
26. 26.8 × 9 =
27. 27.7 × 9 =
28. 28.7 × 9 =
29. 29.4 × 9 =
30. 30.649 × 999 =
31. 31.6 × 9 =
32. 32.2 × 9 =
33. 33.117 × 99 =
34. 34.71 × 99 =
35. 35.114 × 999 =
36. 36.1091 × 99 =
37. 37.1565 × 99 =
38. 38.12 × 99 =
39. 39.91 × 99 =
40. 40.556 × 99 =

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