Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 491 · 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. 1.869 × 99 =
2. 2.273 × 999 =
3. 3.87 × 999 =
4. 4.64 × 99 =
5. 5.1217 × 99 =
6. 6.8 × 9 =
7. 7.39 × 99 =
8. 8.679 × 999 =
9. 9.51 × 99 =
10. 10.36 × 99 =
11. 11.22 × 99 =
12. 12.2 × 9 =
13. 13.6 × 9 =
14. 14.2301 × 99 =
15. 15.184 × 9 =
16. 16.88 × 9 =
17. 17.559 × 999 =
18. 18.43 × 99 =
19. 19.3556 × 999 =
20. 20.516 × 999 =
21. 21.7 × 9 =
22. 22.7 × 9 =
23. 23.5 × 9 =
24. 24.95 × 9 =
25. 25.2 × 9 =
26. 26.29791 × 999 =
27. 27.16 × 99 =
28. 28.5 × 9 =
29. 29.2671 × 99 =
30. 30.5 × 9 =
31. 31.925 × 999 =
32. 32.949 × 999 =
33. 33.681 × 999 =
34. 34.6 × 9 =
35. 35.743 × 999 =
36. 36.163 × 999 =
37. 37.76 × 99 =
38. 38.36 × 99 =
39. 39.77 × 99 =
40. 40.48 × 99 =

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