Find the difference between the decimals represented by the points f and e on the given number line.
Consider the given number line.

Observe that:
The distance between 0 and 1; 1 and 2 each is divided into 10 equal parts.
So, each part represents a length of one-tenth or 0.1.
Now, count the number of parts from 0 to f.
There are 3 parts.
This means that the point f is 3 parts to the right of 0 or 3 tenths after 0.
Now, 0 and 3 tenths equals 0.3.
So, the decimal represented by the point f is 0.3.
Similarly, the decimal represented by the point e is 1.7.

Now, let's find the difference between the decimals represented by the points f and e.
Notice that point e is 14 parts ahead of point f.
Also, we know each part represents a length of one-tenth or 0.1.
So, 14 parts is 14 tenths or 1.4.
The difference between the decimals represented by the points f and e is 1.4.