Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 400 · 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. 1.6 × 9 =
2. 2.8 × 9 =
3. 3.53 × 9 =
4. 4.581 × 999 =
5. 5.76 × 99 =
6. 6.96 × 99 =
7. 7.437 × 99 =
8. 8.31 × 99 =
9. 9.64 × 99 =
10. 10.409 × 999 =
11. 11.151 × 9 =
12. 12.674 × 999 =
13. 13.3 × 9 =
14. 14.3 × 9 =
15. 15.746 × 99 =
16. 16.63 × 999 =
17. 17.25 × 99 =
18. 18.942 × 999 =
19. 19.7 × 9 =
20. 20.996 × 999 =
21. 21.61 × 99 =
22. 22.1392 × 99 =
23. 23.91 × 99 =
24. 24.21094 × 999 =
25. 25.1914 × 99 =
26. 26.4 × 9 =
27. 27.62 × 99 =
28. 28.1533 × 99 =
29. 29.3 × 99 =
30. 30.3 × 9 =
31. 31.2791 × 99 =
32. 32.239 × 9 =
33. 33.5 × 9 =
34. 34.187 × 99 =
35. 35.507 × 999 =
36. 36.6 × 99 =
37. 37.25 × 9 =
38. 38.3 × 9 =
39. 39.1931 × 99 =
40. 40.611 × 999 =

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