Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 512 · 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. 1.222 × 9 =
2. 2.4164 × 999 =
3. 3.17985 × 999 =
4. 4.14 × 99 =
5. 5.55 × 99 =
6. 6.193 × 9 =
7. 7.894 × 99 =
8. 8.2 × 9 =
9. 9.4 × 9 =
10. 10.76 × 99 =
11. 11.21 × 99 =
12. 12.5 × 9 =
13. 13.1369 × 99 =
14. 14.1869 × 99 =
15. 15.77 × 99 =
16. 16.71 × 99 =
17. 17.1403 × 99 =
18. 18.61 × 99 =
19. 19.2 × 9 =
20. 20.61 × 99 =
21. 21.3 × 9 =
22. 22.996 × 999 =
23. 23.16509 × 999 =
24. 24.55 × 99 =
25. 25.1615 × 99 =
26. 26.241 × 9 =
27. 27.18 × 99 =
28. 28.7 × 9 =
29. 29.469 × 999 =
30. 30.222 × 9 =
31. 31.1016 × 99 =
32. 32.1265 × 99 =
33. 33.138 × 99 =
34. 34.1009 × 99 =
35. 35.52 × 99 =
36. 36.28511 × 999 =
37. 37.4 × 99 =
38. 38.28936 × 999 =
39. 39.18 × 99 =
40. 40.3 × 9 =

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