Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 993 · 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. 1.51 × 99 =
2. 2.69 × 999 =
3. 3.3 × 99 =
4. 4.7 × 9 =
5. 5.5 × 9 =
6. 6.88 × 9 =
7. 7.23 × 99 =
8. 8.46 × 9 =
9. 9.6068 × 999 =
10. 10.76 × 999 =
11. 11.56 × 99 =
12. 12.371 × 999 =
13. 13.32 × 99 =
14. 14.5 × 9 =
15. 15.2341 × 99 =
16. 16.117 × 9 =
17. 17.7 × 9 =
18. 18.5 × 9 =
19. 19.5 × 9 =
20. 20.213 × 9 =
21. 21.6 × 9 =
22. 22.64 × 99 =
23. 23.24 × 9 =
24. 24.354 × 999 =
25. 25.5024 × 999 =
26. 26.4 × 9 =
27. 27.6 × 9 =
28. 28.98 × 99 =
29. 29.37 × 99 =
30. 30.1741 × 99 =
31. 31.1001 × 99 =
32. 32.14041 × 999 =
33. 33.53 × 99 =
34. 34.5193 × 999 =
35. 35.7 × 9 =
36. 36.83 × 99 =
37. 37.651 × 999 =
38. 38.88 × 99 =
39. 39.6 × 9 =
40. 40.7 × 9 =

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