Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 141 · 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. 2.19 × 99 =
3. 3.2 × 9 =
4. 4.77 × 99 =
5. 5.29214 × 999 =
6. 6.5 × 9 =
7. 7.15 × 99 =
8. 8.7 × 9 =
9. 9.8 × 9 =
10. 10.89 × 99 =
11. 11.256 × 9 =
12. 12.56 × 99 =
13. 13.3 × 9 =
14. 14.176 × 999 =
15. 15.402 × 999 =
16. 16.164 × 999 =
17. 17.31 × 99 =
18. 18.94 × 9 =
19. 19.47 × 99 =
20. 20.27 × 99 =
21. 21.2633 × 99 =
22. 22.91 × 99 =
23. 23.612 × 999 =
24. 24.2264 × 99 =
25. 25.95 × 99 =
26. 26.678 × 999 =
27. 27.15 × 99 =
28. 28.94 × 99 =
29. 29.2 × 9 =
30. 30.267 × 9 =
31. 31.8 × 9 =
32. 32.864 × 999 =
33. 33.3 × 9 =
34. 34.68 × 99 =
35. 35.19083 × 999 =
36. 36.57 × 99 =
37. 37.3 × 9 =
38. 38.52 × 99 =
39. 39.2 × 9 =
40. 40.69 × 99 =

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