Dydy Danny Chung a Maths Ddim yn Ffrindiau

Description

Eleven-year-old Danny Chung hates maths more than anything. His life is turned upside down when a surprise that he’s been promised turns out to be his little, wrinkly, ex-maths-champion grandmother from China. What’s worse, Nai Nai has to share his room, AND she takes the top bunk! Part of the Rhyngom Scheme.