Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 790 · 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. 1.21 × 999 =
2. 2.5 × 9 =
3. 3.88 × 99 =
4. 4.93 × 99 =
5. 5.735 × 99 =
6. 6.243 × 999 =
7. 7.511 × 999 =
8. 8.51 × 99 =
9. 9.87 × 99 =
10. 10.21 × 99 =
11. 11.5 × 9 =
12. 12.424 × 999 =
13. 13.88 × 99 =
14. 14.254 × 999 =
15. 15.2208 × 99 =
16. 16.85 × 99 =
17. 17.746 × 999 =
18. 18.867 × 999 =
19. 19.111 × 999 =
20. 20.2786 × 99 =
21. 21.931 × 999 =
22. 22.117 × 9 =
23. 23.3 × 9 =
24. 24.474 × 999 =
25. 25.2 × 9 =
26. 26.435 × 999 =
27. 27.32 × 99 =
28. 28.249 × 9 =
29. 29.11 × 99 =
30. 30.223 × 9 =
31. 31.10641 × 999 =
32. 32.57 × 999 =
33. 33.15 × 99 =
34. 34.61 × 99 =
35. 35.8 × 9 =
36. 36.256 × 9 =
37. 37.7 × 9 =
38. 38.20799 × 999 =
39. 39.21 × 99 =
40. 40.8 × 9 =

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