The graph below shows some types of fish that live in the Red Sea. Find the difference between the greatest and the least number of fish.
Look along the vertical axis to find the number of fish.
The highest point on the broken line graph is at 260 (for shark),
so the greatest number of fish is 260.
The lowest point on the broken line graph is at 40 (for carp), so
the least number of fish is 40.
To find the difference between the greatest and least number of