Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 657 · 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. 1.68 × 99 =
2. 2.46 × 99 =
3. 3.805 × 99 =
4. 4.891 × 999 =
5. 5.2521 × 99 =
6. 6.44 × 99 =
7. 7.3 × 9 =
8. 8.24 × 99 =
9. 9.7 × 9 =
10. 10.8 × 9 =
11. 11.21 × 99 =
12. 12.12 × 99 =
13. 13.8 × 99 =
14. 14.53 × 999 =
15. 15.51 × 99 =
16. 16.3 × 9 =
17. 17.1841 × 99 =
18. 18.2719 × 99 =
19. 19.597 × 999 =
20. 20.1174 × 99 =
21. 21.25324 × 999 =
22. 22.195 × 9 =
23. 23.5 × 9 =
24. 24.197 × 999 =
25. 25.298 × 999 =
26. 26.246 × 999 =
27. 27.2 × 99 =
28. 28.21 × 99 =
29. 29.44 × 99 =
30. 30.8 × 9 =
31. 31.2864 × 99 =
32. 32.261 × 999 =
33. 33.238 × 9 =
34. 34.52 × 999 =
35. 35.1603 × 99 =
36. 36.75 × 999 =
37. 37.20057 × 999 =
38. 38.4 × 9 =
39. 39.2965 × 999 =
40. 40.915 × 999 =

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