Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 145 · 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. 1.178 × 99 =
2. 2.551 × 99 =
3. 3.29437 × 999 =
4. 4.89 × 99 =
5. 5.88 × 99 =
6. 6.3 × 99 =
7. 7.8 × 9 =
8. 8.2 × 9 =
9. 9.21 × 9 =
10. 10.44 × 99 =
11. 11.36 × 99 =
12. 12.29 × 99 =
13. 13.25 × 99 =
14. 14.5 × 9 =
15. 15.53 × 99 =
16. 16.2 × 9 =
17. 17.185 × 999 =
18. 18.2055 × 99 =
19. 19.8 × 9 =
20. 20.17867 × 999 =
21. 21.765 × 999 =
22. 22.711 × 999 =
23. 23.14 × 99 =
24. 24.2 × 9 =
25. 25.7 × 9 =
26. 26.4 × 9 =
27. 27.725 × 999 =
28. 28.192 × 999 =
29. 29.1587 × 99 =
30. 30.768 × 999 =
31. 31.52 × 99 =
32. 32.246 × 999 =
33. 33.21 × 99 =
34. 34.4 × 9 =
35. 35.4 × 9 =
36. 36.26221 × 999 =
37. 37.8 × 9 =
38. 38.8 × 9 =
39. 39.6 × 9 =
40. 40.62 × 99 =

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