Hi Cleek:
I think Haziedoll has a point - 3b is the expected average for end of Year 4 (see Mumsnet Learning pages here: www.mumsnet.com/learning/assessment/progress-through-national-curriculum-levels.
So a 3c in maths, 3a in writing and 3b in reading actually means she's on track (because there's one term left in Y4) for maths, and a little ahead in reading and writing.
So given you've identified that the problem is applying maths skills to written problems (i.e. If Bob has £10, how many lollipops can he buy at £1.25 each).
Now is the time to be sneaky:
You can sneak in this kind of maths question all over the place.
Cooking (recipe ingredients are for 2 people) but you want to cook for six - ask your DD what you should do.
Driving: Journey is 150 miles on motorway and 30 miles at 30 mph. How much time should you allow for the journey?
Budgeting: If I give you 50p each weekday and you have 3 days off from school this month - how much money should I budget for your tuck this month?
Money conversion: If you're on holiday in Europe - have her help convert back to pounds sterling.
You get the idea.
The other thing you can do is look into workbooks - Carol Vorderman does a maths range by year. You can avoid the stuff she's mastered and focus on the weak areas.
You can also join a mathsfactor summer camp: on-line tutorial Carol Vorderman has started. Info here: www.themathsfactor.com/. I don't think info is on just yet - but keep an eye out in June. If she practices over the summer, this might help her consolidate what she's learned and begin to progress. The nice thing about something on-line - is your DD can do it at home as and when it's convenient and involves you in very little work!
For reading and writing. I'd plan on encouraging the reading is kept up over the summer - maybe regularly go to the library and with writing have her send postcards every chance she gets.
HTH