Looking for Rosie's green eartag number?
Scroll down to find it but don't forget to see what else is on this page...
Do you know how a cow turns delicious green grass into the milk in your glass?
Watch this video to find out...
Well done, you've found it!
The fourth of my missing numbers is the green number you can see in the middle of the bouncing image.
Before you head off looking for the final missing number, watch the movie and learn all you can about how a cow works.