This week we have published the first of our sets of worksheets aimed at helping children  raise their SAT levels from a 4 to a 5. As such, some of the questions are quite tricky. We begin by looking at measurement of length, perimeter and area. A good knowledge of the metric system of measuring length is needed to succeed with this section, including converting millimetres to centimetres and centimetres to metres. Children may well be asked to compare measurements written in mm, cm or m. One of the best techniques to use with these comparisons is to convert all the measurements to centimetres and then compare – but don’t forget to convert back to the originals when writing in the answers! Perimeter questions assume knowledge of properties of shapes e.g. an isosceles triangle has two sides of equal length, an equilateral triangle has 3 equal sides of equal length and a regular polygon has all its sides of equal length. Popular questions also involve working out perimeters, but firstly having to work out lengths of sides from the given information. Many children find these two and three part operations to get an answer very tricky and need plenty of experience of how to attack them. A further complication is that it is often stated that the drawings are not to scale – a clear warning not to try and work the answer out by using a ruler! Area questions are seldom straightforward. A popular type is to have two rectangles together forming a third shape. Again, length of sides has to be worked out before the area can be calculated. Go to KS2 SAT Maths Measurement worksheet