Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 639 · 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. 1.62 × 99 =
2. 2.1521 × 99 =
3. 3.7 × 9 =
4. 4.11 × 99 =
5. 5.1651 × 99 =
6. 6.82 × 99 =
7. 7.4 × 9 =
8. 8.2031 × 99 =
9. 9.6 × 9 =
10. 10.154 × 9 =
11. 11.199 × 99 =
12. 12.609 × 999 =
13. 13.214 × 999 =
14. 14.801 × 999 =
15. 15.1848 × 99 =
16. 16.762 × 999 =
17. 17.6 × 9 =
18. 18.21618 × 999 =
19. 19.19 × 99 =
20. 20.491 × 999 =
21. 21.1164 × 99 =
22. 22.79 × 99 =
23. 23.74 × 99 =
24. 24.21 × 99 =
25. 25.4 × 9 =
26. 26.4 × 9 =
27. 27.16 × 99 =
28. 28.3 × 9 =
29. 29.143 × 999 =
30. 30.66 × 99 =
31. 31.13756 × 999 =
32. 32.86 × 9 =
33. 33.234 × 999 =
34. 34.41 × 99 =
35. 35.231 × 999 =
36. 36.7 × 9 =
37. 37.1862 × 99 =
38. 38.2 × 9 =
39. 39.7 × 9 =
40. 40.96 × 99 =

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