Loop cards or Follow Me cards

Primary resources has lots of loop cards (or follow me cards) to download for free on their website.

There are various resources covering:
Doubles & Halves
Addition & Subtraction
Multiplication & Division
Fractions, Decimals & Percentages
Money
Time
http://www.primaryresources.co.uk/maths/mathsA2.htm

Wordbuilder

Neat little wordbuilder game at http://www.langtolang.com/games/word-builder/ which times you to build as many words as you can from the letters given. It gives you your score and shows the answers at the end.