3/6= 1/2

2/6= 1/3

5=2+3

Answer each child 1/2+1/3.

Divide three moon cakes in half and give them to six children.

Each child has half a moon cake.

Then divide the remaining two mooncakes into three parts and give them to six children.

Then each child has 1/2+ 1/3 moon cakes.