Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 828 · 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. 1.4 × 9 =
2. 2.23 × 99 =
3. 3.1951 × 99 =
4. 4.2843 × 99 =
5. 5.112 × 999 =
6. 6.11 × 99 =
7. 7.42 × 99 =
8. 8.2 × 9 =
9. 9.21 × 99 =
10. 10.44 × 9 =
11. 11.365 × 999 =
12. 12.502 × 99 =
13. 13.31 × 9 =
14. 14.15 × 99 =
15. 15.7 × 9 =
16. 16.4 × 9 =
17. 17.2 × 9 =
18. 18.63 × 99 =
19. 19.4 × 99 =
20. 20.14254 × 999 =
21. 21.12 × 99 =
22. 22.7 × 9 =
23. 23.1722 × 99 =
24. 24.39 × 99 =
25. 25.6 × 9 =
26. 26.78 × 99 =
27. 27.217 × 9 =
28. 28.7 × 9 =
29. 29.5 × 9 =
30. 30.4 × 9 =
31. 31.5 × 9 =
32. 32.2398 × 99 =
33. 33.106 × 9 =
34. 34.3 × 9 =
35. 35.45 × 99 =
36. 36.28 × 999 =
37. 37.82 × 99 =
38. 38.697 × 999 =
39. 39.83 × 99 =
40. 40.135 × 9 =

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