Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 47 · 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. 1.71 × 99 =
2. 2.2059 × 99 =
3. 3.87 × 99 =
4. 4.2 × 9 =
5. 5.19217 × 999 =
6. 6.37 × 99 =
7. 7.77 × 99 =
8. 8.152 × 9 =
9. 9.169 × 999 =
10. 10.88 × 99 =
11. 11.432 × 99 =
12. 12.604 × 999 =
13. 13.399 × 999 =
14. 14.65 × 99 =
15. 15.981 × 999 =
16. 16.2167 × 99 =
17. 17.766 × 999 =
18. 18.13241 × 999 =
19. 19.58 × 99 =
20. 20.69 × 99 =
21. 21.31 × 99 =
22. 22.3 × 9 =
23. 23.162 × 9 =
24. 24.21 × 99 =
25. 25.205 × 999 =
26. 26.25 × 99 =
27. 27.21 × 99 =
28. 28.8 × 9 =
29. 29.59 × 99 =
30. 30.3 × 9 =
31. 31.7 × 9 =
32. 32.7 × 9 =
33. 33.1718 × 99 =
34. 34.61 × 99 =
35. 35.7 × 9 =
36. 36.5 × 9 =
37. 37.76 × 999 =
38. 38.2 × 9 =
39. 39.8 × 99 =
40. 40.123 × 999 =

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