Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 919 · 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. 1.225 × 999 =
2. 2.1553 × 99 =
3. 3.5 × 9 =
4. 4.373 × 999 =
5. 5.839 × 999 =
6. 6.12 × 99 =
7. 7.5 × 9 =
8. 8.4 × 9 =
9. 9.18679 × 999 =
10. 10.185 × 999 =
11. 11.17 × 99 =
12. 12.2784 × 99 =
13. 13.215 × 9 =
14. 14.59 × 99 =
15. 15.221 × 9 =
16. 16.521 × 999 =
17. 17.458 × 999 =
18. 18.86 × 99 =
19. 19.16 × 999 =
20. 20.709 × 999 =
21. 21.28241 × 999 =
22. 22.2313 × 99 =
23. 23.7 × 9 =
24. 24.6 × 9 =
25. 25.1133 × 99 =
26. 26.5786 × 999 =
27. 27.47 × 99 =
28. 28.965 × 999 =
29. 29.1881 × 99 =
30. 30.8 × 9 =
31. 31.2405 × 99 =
32. 32.25 × 99 =
33. 33.591 × 999 =
34. 34.8 × 9 =
35. 35.217 × 9 =
36. 36.3 × 9 =
37. 37.16 × 99 =
38. 38.71 × 99 =
39. 39.858 × 999 =
40. 40.3 × 9 =

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