write sth. in full

[simplythebest]

Hello,

Tell me please if "write sth. in full" is OK in:
Complete the sentences with the ordinal numbers written in full.
(the numbers are given as figures, i.e. 6th, 4th, etc.)
Once i read an instruction reading "... written in full letters"

Thanks,
simplythebest

[Josef]

Complete the sentences with the ordinal numbers written in full.

The above is normal usage.

"...written in full letters" is not English.