Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 571 · 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. 1.2 × 9 =
2. 2.21308 × 999 =
3. 3.7 × 9 =
4. 4.386 × 99 =
5. 5.19 × 99 =
6. 6.81 × 99 =
7. 7.81 × 999 =
8. 8.76 × 99 =
9. 9.101 × 999 =
10. 10.3 × 9 =
11. 11.6721 × 999 =
12. 12.681 × 99 =
13. 13.18 × 99 =
14. 14.101 × 9 =
15. 15.29 × 9 =
16. 16.1776 × 99 =
17. 17.5 × 9 =
18. 18.222 × 9 =
19. 19.399 × 999 =
20. 20.826 × 999 =
21. 21.8 × 9 =
22. 22.18 × 99 =
23. 23.84 × 99 =
24. 24.95 × 99 =
25. 25.268 × 99 =
26. 26.716 × 999 =
27. 27.11 × 99 =
28. 28.381 × 999 =
29. 29.133 × 9 =
30. 30.1941 × 99 =
31. 31.27088 × 999 =
32. 32.6 × 9 =
33. 33.6 × 9 =
34. 34.546 × 999 =
35. 35.34 × 99 =
36. 36.62 × 99 =
37. 37.463 × 999 =
38. 38.456 × 999 =
39. 39.14 × 99 =
40. 40.24 × 9 =

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