SATs style questions
Old SATs papers can be found at www.satspapers.org.uk
These are the old papers based on the old curriculum but they are useful for practicing.
www.kangaroomaths.com, www.mathsisfun.com and www.nrich.com offer detailed background information as well as activities and ideas.
mathsframe.co.uk, topmarks.co.uk and mad4maths.com contain free maths games or maths worksheets can be created and printed from maths-aids.com
www.topmarks.co.uk and www.bbc.co.uk/bitesize/ks2/english/ have lots of grammar, comprehension and punctuation tips and games.