Key Stage 2 Problem Solving is a series of graded activity books helping children to sharpen their mathematical skills. It encourages them to apply their maths skills to a range of 'real-life' situations such as shopping & keeping score in games. Key Stage 2 Problem Solving Book 3 is particularly suitable for children in Years 5 & 6 & covers: rotation of shapes lines of symmetry tessellation percentages fractions decimal numbers time problems & ratio.