Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 655 · 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. 1.4 × 9 =
2. 2.15 × 99 =
3. 3.178 × 999 =
4. 4.20297 × 999 =
5. 5.44 × 99 =
6. 6.1162 × 99 =
7. 7.58 × 99 =
8. 8.77 × 99 =
9. 9.2093 × 99 =
10. 10.4 × 9 =
11. 11.2 × 9 =
12. 12.58 × 9 =
13. 13.47 × 99 =
14. 14.5 × 99 =
15. 15.7 × 9 =
16. 16.706 × 999 =
17. 17.74 × 9 =
18. 18.27271 × 999 =
19. 19.38 × 999 =
20. 20.987 × 999 =
21. 21.6 × 9 =
22. 22.4 × 9 =
23. 23.7 × 9 =
24. 24.46 × 999 =
25. 25.149 × 9 =
26. 26.821 × 999 =
27. 27.821 × 999 =
28. 28.2 × 9 =
29. 29.879 × 999 =
30. 30.8 × 9 =
31. 31.3 × 9 =
32. 32.22037 × 999 =
33. 33.167 × 999 =
34. 34.132 × 9 =
35. 35.6 × 9 =
36. 36.119 × 999 =
37. 37.25 × 99 =
38. 38.46 × 99 =
39. 39.265 × 9 =
40. 40.24957 × 999 =

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