Learn how to add and subtract lengths, measure perimeter of 2D shapes and convert lengths.
Discover 11,128,835 listings and 277,927 playable programmes from the BBC
Learn how to add and subtract lengths, measure perimeter of 2D shapes and convert lengths.
CBBC is the BBC's multiplatform offering for 6-12 year olds bringing the very best drama, entertainment and factual programmes to its young viewers.
