Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 310 · 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. 1.1639 × 99 =
2. 2.3 × 9 =
3. 3.7 × 999 =
4. 4.26124 × 999 =
5. 5.7 × 9 =
6. 6.4 × 9 =
7. 7.2 × 9 =
8. 8.736 × 999 =
9. 9.752 × 999 =
10. 10.3 × 9 =
11. 11.1164 × 99 =
12. 12.33 × 999 =
13. 13.907 × 999 =
14. 14.904 × 99 =
15. 15.1521 × 99 =
16. 16.119 × 999 =
17. 17.7 × 9 =
18. 18.21641 × 999 =
19. 19.445 × 99 =
20. 20.8 × 9 =
21. 21.8493 × 999 =
22. 22.7738 × 999 =
23. 23.8 × 9 =
24. 24.1371 × 99 =
25. 25.891 × 999 =
26. 26.603 × 999 =
27. 27.1926 × 99 =
28. 28.8 × 9 =
29. 29.1929 × 99 =
30. 30.796 × 999 =
31. 31.89 × 99 =
32. 32.17834 × 999 =
33. 33.6335 × 999 =
34. 34.141 × 999 =
35. 35.24384 × 999 =
36. 36.778 × 99 =
37. 37.3 × 9 =
38. 38.8 × 9 =
39. 39.51 × 99 =
40. 40.22622 × 999 =

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