Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 626 · 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. 1.71 × 99 =
2. 2.3 × 9 =
3. 3.22 × 99 =
4. 4.981 × 999 =
5. 5.75 × 99 =
6. 6.77 × 99 =
7. 7.31 × 99 =
8. 8.31 × 9 =
9. 9.25397 × 999 =
10. 10.602 × 999 =
11. 11.3516 × 999 =
12. 12.3 × 9 =
13. 13.92 × 99 =
14. 14.7 × 9 =
15. 15.28 × 99 =
16. 16.2 × 99 =
17. 17.775 × 999 =
18. 18.2 × 9 =
19. 19.2188 × 99 =
20. 20.72 × 99 =
21. 21.18 × 99 =
22. 22.564 × 999 =
23. 23.699 × 999 =
24. 24.21 × 99 =
25. 25.3 × 99 =
26. 26.488 × 999 =
27. 27.8 × 9 =
28. 28.88 × 99 =
29. 29.7 × 9 =
30. 30.261 × 9 =
31. 31.2 × 9 =
32. 32.84 × 99 =
33. 33.8 × 9 =
34. 34.588 × 999 =
35. 35.54 × 99 =
36. 36.845 × 999 =
37. 37.2 × 9 =
38. 38.4 × 9 =
39. 39.47 × 99 =
40. 40.137 × 999 =

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