Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 538 · 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. 2.5 × 9 =
3. 3.131 × 999 =
4. 4.583 × 999 =
5. 5.398 × 999 =
6. 6.16672 × 999 =
7. 7.41 × 99 =
8. 8.33 × 9 =
9. 9.5 × 9 =
10. 10.317 × 999 =
11. 11.71 × 99 =
12. 12.91 × 9 =
13. 13.348 × 99 =
14. 14.15 × 99 =
15. 15.7 × 9 =
16. 16.16336 × 999 =
17. 17.282 × 999 =
18. 18.91 × 99 =
19. 19.1151 × 99 =
20. 20.7 × 9 =
21. 21.4657 × 999 =
22. 22.24 × 99 =
23. 23.52 × 99 =
24. 24.52 × 99 =
25. 25.63 × 99 =
26. 26.4 × 9 =
27. 27.21 × 99 =
28. 28.8 × 9 =
29. 29.23 × 99 =
30. 30.39 × 99 =
31. 31.5704 × 999 =
32. 32.64 × 999 =
33. 33.12 × 99 =
34. 34.6 × 9 =
35. 35.3 × 9 =
36. 36.147 × 9 =
37. 37.166 × 9 =
38. 38.26928 × 999 =
39. 39.7 × 9 =
40. 40.36 × 99 =

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