The decrease in the percentage of children and young people reported as being able to speak Welsh was not reflected in the percentage of children being taught Welsh as a first language.
Ni chafodd y gostyngiad yng nghanran y plant a phobl ifanc y nodwyd eu bod yn gallu siarad Cymraeg ei hadlewyrchu yn y ganran o blant sy'n dysgu Cymraeg fel iaith gyntaf.