Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 588 · 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. 1.136 × 999 =
2. 2.699 × 99 =
3. 3.8 × 9 =
4. 4.28 × 99 =
5. 5.12 × 999 =
6. 6.22521 × 999 =
7. 7.38 × 99 =
8. 8.13 × 99 =
9. 9.8415 × 999 =
10. 10.7 × 99 =
11. 11.4 × 99 =
12. 12.831 × 999 =
13. 13.25 × 99 =
14. 14.4 × 9 =
15. 15.9 × 99 =
16. 16.24 × 99 =
17. 17.186 × 999 =
18. 18.202 × 999 =
19. 19.916 × 999 =
20. 20.14 × 99 =
21. 21.4 × 9 =
22. 22.1881 × 99 =
23. 23.205 × 9 =
24. 24.84 × 99 =
25. 25.23246 × 999 =
26. 26.5 × 9 =
27. 27.17337 × 999 =
28. 28.151 × 999 =
29. 29.58 × 99 =
30. 30.11 × 99 =
31. 31.12626 × 999 =
32. 32.1249 × 99 =
33. 33.31 × 99 =
34. 34.3 × 9 =
35. 35.73 × 999 =
36. 36.3 × 9 =
37. 37.98 × 99 =
38. 38.3 × 9 =
39. 39.84 × 9 =
40. 40.8 × 9 =

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