Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 197 · 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. 1.7 × 9 =
2. 2.91 × 99 =
3. 3.387 × 999 =
4. 4.55 × 99 =
5. 5.2643 × 99 =
6. 6.36 × 99 =
7. 7.27 × 999 =
8. 8.64 × 99 =
9. 9.4 × 99 =
10. 10.2829 × 99 =
11. 11.8 × 9 =
12. 12.1476 × 99 =
13. 13.77 × 99 =
14. 14.4 × 9 =
15. 15.71 × 99 =
16. 16.4 × 9 =
17. 17.127 × 999 =
18. 18.76 × 99 =
19. 19.221 × 999 =
20. 20.252 × 99 =
21. 21.2 × 9 =
22. 22.34 × 99 =
23. 23.2681 × 999 =
24. 24.59 × 99 =
25. 25.171 × 999 =
26. 26.619 × 999 =
27. 27.7 × 9 =
28. 28.54 × 99 =
29. 29.1126 × 99 =
30. 30.25831 × 999 =
31. 31.5 × 9 =
32. 32.831 × 999 =
33. 33.372 × 999 =
34. 34.254 × 9 =
35. 35.943 × 999 =
36. 36.76 × 99 =
37. 37.25 × 99 =
38. 38.877 × 99 =
39. 39.22638 × 999 =
40. 40.129 × 9 =

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