The relationship between being able to read and write Welsh with fluency and where they started learning to speak Welsh was not as clear for children and young people as it was for adults.
Nid oedd y berthynas rhwng gallu darllen ac ysgrifennu Cymraeg â rhuglder a ble y gwnaethant ddechrau dysgu siarad Cymraeg mor glir ar gyfer plant a phobl ifanc ag yr oedd ar gyfer oedolion.