If I were in your position, I would take your daughter out of school for at least 2 weeks before exam, or even 4 weeks and teach her yourself.
A child can learn more in 2 weeks at home than 1 term at school.Most state schools do not tutor for 11+.
You may not like this but...
One has to accept, primary school is for "socialising" and by and large provide a poor academic education! (Others will disagree).Socialising is important, but does not help with 11+.
Sacrafice 1 month!
Some teachers are excellent, but some teachers are "stupid" as they teach children the eighth leter of the alphabet is "haitch", when it is actually "aitch". People who say "haitch" are ignorant.
Check any dictionary and you will see "haitch " is not standard English (Oxford, Cambridge). It is thus, wrong. My son is the only child in his class who says "aitch" and everyone thinks he is wrong! It is school led ignorance, leading to an ignorant generation.
You will hear the "haitchers" on television now.
A teacher's job is to teach correctly. If they cannot do so, they should be sacked. Sadly, they are not. Soon they will teach FEF", "LEL", "MEM", "NEN", "RAR" "WUBBLEYOU" etc!
Some teachers complain when a child adds in columns and "carrys" at the top.
They insist they "carry" at the bottom. Of course, this is inefficient, as the child is forced to draw two lines for an "answer box" and rescan the paper with his eye to add the "carry". This wastes time in an 11+ exam.
I informed the teachers to refrain from forcing my children to carry at the bottom, and told them explicitly to ignore the teachers if they told to do so. They learnt how to add in columns before year 2 SATS and now the teacher wanted to change their method 2 years later!
It should not matter where one puts the "carry", as long as one understands what one is doing.Some schools write sarcastic letters when you ask for the year 6 maths syllabus, in year 5, claiming most parents prefer the school to teach maths.Rely on the school, and the child is likely to fail (unless the child is naturally intelligent).
Depressive reading! Some teachers will be upset, but it is a valid view.These are some of the reasons, you may be better off teaching your own child during the build up.CEM, University of Durham claim their 11+ exams are tutor proof. I don't believe it.
Ensure the child has learnt the entire year 6 syllabus in maths (if it is part of the exam) and cover all other topics. Use this site for practice, there is good material. It is the place to start. You can move on to other papers later.
Above all, practice as timing is essential!
If possible, pay for a "mock" to give the child the feeling of a real test under test conditions in an exam hall and understand timing.