Here we have a set of number tracks with four numbers in each.

Here we have a set of number tracks with four numbers in each. Just fill the gaps so the number tracks are complete. A little bit harder than the 3 number tracks as two numbers in a row are missing on some of them. Those gorillas are up to their tricks again!

Here we have a set of number tracks with five numbers in each. Just fill the gaps so the number tracks are complete. Only one number missing in each line. Can the dinosaurs remember that far back?

Here we have a set of number tracks with five numbers in each. Just fill the gaps so the number tracks are complete. A little bit harder than before as several numbers in a row are missing on some of them.