Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 398 · 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. 1.177 × 9 =
2. 2.53 × 99 =
3. 3.31 × 99 =
4. 4.658 × 999 =
5. 5.813 × 999 =
6. 6.2 × 9 =
7. 7.516 × 999 =
8. 8.131 × 999 =
9. 9.889 × 99 =
10. 10.828 × 999 =
11. 11.1416 × 99 =
12. 12.7 × 9 =
13. 13.89 × 99 =
14. 14.869 × 999 =
15. 15.4 × 9 =
16. 16.51 × 9 =
17. 17.801 × 99 =
18. 18.3 × 9 =
19. 19.59 × 99 =
20. 20.935 × 999 =
21. 21.1545 × 99 =
22. 22.5 × 9 =
23. 23.5441 × 999 =
24. 24.153 × 999 =
25. 25.7743 × 999 =
26. 26.15 × 99 =
27. 27.109 × 999 =
28. 28.1141 × 99 =
29. 29.21 × 99 =
30. 30.3 × 9 =
31. 31.7 × 9 =
32. 32.481 × 999 =
33. 33.752 × 999 =
34. 34.5 × 99 =
35. 35.15 × 99 =
36. 36.14 × 99 =
37. 37.261 × 9 =
38. 38.18942 × 999 =
39. 39.8 × 99 =
40. 40.7 × 9 =

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