Do lots of young children confuse b and d and write numbers backwards or is this a sign of dyslexia

[handlemecarefully]

Dd - aged 5, seems bright in terms of verbal skills, conceptual skills etc. Struggling with reading (still missing some letter recognition) and confuses 'b' and 'd', also 'g' and 'y' and writes the numbers 2, 5 and 7 back to front.

Is this commonplace at the early stages of formal education or could she by dyslexic?

(Back to check later - must go and collect her from school)

Both my children got b and d mixed up. I agree that getting children to look at the shape of the word bed helps them remember which is which. Maybe draw a funny picture of someone asleep on the word written out. Also my children mixed up 12 and 21. That's a work in progress for my four year old.