Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 492 · 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. 1.87 × 99 =
2. 2.561 × 999 =
3. 3.245 × 9 =
4. 4.94 × 99 =
5. 5.154 × 9 =
6. 6.518 × 999 =
7. 7.93 × 99 =
8. 8.2 × 9 =
9. 9.79 × 9 =
10. 10.93 × 99 =
11. 11.17 × 99 =
12. 12.1431 × 99 =
13. 13.648 × 999 =
14. 14.8 × 9 =
15. 15.86 × 99 =
16. 16.198 × 9 =
17. 17.5 × 9 =
18. 18.658 × 999 =
19. 19.59 × 99 =
20. 20.5 × 9 =
21. 21.6 × 9 =
22. 22.581 × 999 =
23. 23.69 × 99 =
24. 24.8 × 9 =
25. 25.18 × 9 =
26. 26.19238 × 999 =
27. 27.24254 × 999 =
28. 28.82 × 99 =
29. 29.3 × 9 =
30. 30.5289 × 999 =
31. 31.2 × 9 =
32. 32.3 × 9 =
33. 33.6 × 9 =
34. 34.2 × 9 =
35. 35.25 × 99 =
36. 36.78 × 9 =
37. 37.5 × 9 =
38. 38.2 × 9 =
39. 39.528 × 999 =
40. 40.49 × 99 =

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