Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 61 · 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. 1.681 × 99 =
2. 2.89 × 99 =
3. 3.153 × 9 =
4. 4.2 × 9 =
5. 5.21865 × 999 =
6. 6.2 × 9 =
7. 7.815 × 999 =
8. 8.7 × 9 =
9. 9.372 × 999 =
10. 10.67 × 99 =
11. 11.67 × 99 =
12. 12.671 × 999 =
13. 13.352 × 999 =
14. 14.7 × 999 =
15. 15.93 × 99 =
16. 16.4 × 9 =
17. 17.3828 × 999 =
18. 18.199 × 9 =
19. 19.48 × 99 =
20. 20.6 × 9 =
21. 21.654 × 99 =
22. 22.7 × 9 =
23. 23.7 × 9 =
24. 24.4 × 9 =
25. 25.8 × 9 =
26. 26.279 × 999 =
27. 27.3 × 9 =
28. 28.217 × 999 =
29. 29.466 × 999 =
30. 30.917 × 999 =
31. 31.1369 × 99 =
32. 32.7 × 9 =
33. 33.3 × 9 =
34. 34.5 × 9 =
35. 35.8 × 9 =
36. 36.773 × 999 =
37. 37.4 × 9 =
38. 38.2466 × 99 =
39. 39.8 × 9 =
40. 40.15601 × 999 =

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