Maths

Math Trainer - this is a fantastic site which actually gives you practice in the number facts which you find difficult to learn.  Start with the 1x1 to 5 x 5 activity and go on from there.
You could print this form to record your scores.

Traffic Lights - which times table makes the different lights go on?  Test your knowledge of times tables with this great game from BEAM.

Hit the button - Times tables, division facts, addition facts
Bingo - times and divide
Multiplication - grid method 
Addition balance - addition bonds

Maths maps gives you google maps with placemarks and questions.  Use the measure tool to answer some of the questions.  Linked pages allow you to research and find out more...How far do you think a tiger can leap?

Maths Live is an amazing resource with interactive lessons on a number of maths topics.  I had a look at the addition and subtraction of decimals one which was excellent and showed all of the steps you need to take.

Fractions
Bowl of fruit challenge - helps you work on fractions of a whole bowl of fruit, helping you to use and apply your maths.
Try Fraction card game 1 from this link and practice fractions of money.
Want a trickier challenge?  Select game 2 from the page here.
Fractions, Decimals, Percentages - card matching game - needs a good memory...have you got what it takes?

Shape, Space
Coordinate games

Addition balance - addition bonds
Data Handling
Bitesize
Venn diagram
Caroll Diagram

     
Measure
Measurring games and tutorials
Convert length