Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 28 · 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. 1.15 × 99 =
2. 2.479 × 999 =
3. 3.232 × 9 =
4. 4.481 × 999 =
5. 5.288 × 999 =
6. 6.28 × 9 =
7. 7.2 × 9 =
8. 8.12 × 9 =
9. 9.22 × 99 =
10. 10.8 × 9 =
11. 11.218 × 999 =
12. 12.9051 × 999 =
13. 13.49 × 99 =
14. 14.3 × 9 =
15. 15.51 × 99 =
16. 16.6 × 9 =
17. 17.164 × 9 =
18. 18.4 × 9 =
19. 19.2 × 99 =
20. 20.403 × 999 =
21. 21.34 × 99 =
22. 22.15942 × 999 =
23. 23.1031 × 99 =
24. 24.104 × 9 =
25. 25.644 × 99 =
26. 26.1874 × 99 =
27. 27.6 × 9 =
28. 28.7 × 9 =
29. 29.1079 × 99 =
30. 30.2417 × 99 =
31. 31.311 × 99 =
32. 32.3 × 9 =
33. 33.464 × 99 =
34. 34.6 × 9 =
35. 35.5 × 9 =
36. 36.21 × 99 =
37. 37.3 × 9 =
38. 38.35 × 99 =
39. 39.6 × 9 =
40. 40.4 × 9 =

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