Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 981 · 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. 1.284 × 999 =
2. 2.29 × 99 =
3. 3.822 × 999 =
4. 4.16644 × 999 =
5. 5.892 × 999 =
6. 6.38 × 99 =
7. 7.8 × 9 =
8. 8.31 × 99 =
9. 9.41 × 99 =
10. 10.786 × 999 =
11. 11.71 × 99 =
12. 12.223 × 999 =
13. 13.334 × 999 =
14. 14.1626 × 99 =
15. 15.808 × 999 =
16. 16.45 × 99 =
17. 17.33 × 99 =
18. 18.2447 × 99 =
19. 19.3858 × 999 =
20. 20.641 × 999 =
21. 21.12 × 99 =
22. 22.42 × 99 =
23. 23.42 × 9 =
24. 24.3 × 9 =
25. 25.8 × 9 =
26. 26.17331 × 999 =
27. 27.57 × 9 =
28. 28.49 × 99 =
29. 29.136 × 9 =
30. 30.5 × 9 =
31. 31.17 × 99 =
32. 32.6 × 9 =
33. 33.52 × 99 =
34. 34.2 × 9 =
35. 35.13437 × 999 =
36. 36.24742 × 999 =
37. 37.11528 × 999 =
38. 38.386 × 99 =
39. 39.639 × 999 =
40. 40.31 × 9 =

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