The general rule to describe the relationship between 10, 100, and 1000 is that each number is obtained by multiplying the previous number by 10. In other words, each number is ten times greater than the previous number.
Specifically:
100 is obtained by multiplying 10 by 10.
1000 is obtained by multiplying 100 by 10.
Therefore, the general rule is that each subsequent number is obtained by multiplying the previous number by 10.