Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 536 · 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. 1.84 × 9 =
2. 2.451 × 999 =
3. 3.5 × 9 =
4. 4.39 × 99 =
5. 5.3 × 9 =
6. 6.19 × 99 =
7. 7.2178 × 99 =
8. 8.28291 × 999 =
9. 9.973 × 99 =
10. 10.356 × 99 =
11. 11.171 × 999 =
12. 12.55 × 99 =
13. 13.3 × 9 =
14. 14.214 × 9 =
15. 15.18 × 99 =
16. 16.31 × 99 =
17. 17.3 × 9 =
18. 18.5 × 99 =
19. 19.23613 × 999 =
20. 20.37 × 99 =
21. 21.196 × 999 =
22. 22.6 × 9 =
23. 23.15879 × 999 =
24. 24.176 × 999 =
25. 25.771 × 999 =
26. 26.6 × 9 =
27. 27.636 × 999 =
28. 28.4 × 9 =
29. 29.24325 × 999 =
30. 30.579 × 999 =
31. 31.48 × 99 =
32. 32.642 × 999 =
33. 33.29 × 99 =
34. 34.18 × 99 =
35. 35.51 × 99 =
36. 36.9 × 99 =
37. 37.4 × 9 =
38. 38.6 × 9 =
39. 39.23 × 9 =
40. 40.39 × 99 =

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