Max Maths, Year 4, Try it, Perimeter (2)

In a Year 4 mathematics exercise on calculating perimeter, students are presented with practical problems to solve. For instance, Samir has drawn a square with a total perimeter of 36 cm. The task for the students is to determine the length of each side of the square. To find the answer, they are prompted to divide the total perimeter by the number of sides a square has. Since a square has four equal sides, the calculation would involve dividing 36 cm by 4 to arrive at the length of each side.

Another problem involves a rectangle with a given perimeter of 210 m and a length of 75 m. The students are asked to complete a series of steps to find the width. They start by adding the length twice, since a rectangle has two equal lengths, which totals 150 m. Subtracting this from the overall perimeter leaves 60 m, which represents the combined measurement of the two widths. Dividing by 2 gives the width of one side. Similarly, for a square with a side length of 60 cm, students are instructed to calculate the perimeter by multiplying the length of one side by the number of sides a square has. These exercises are designed to reinforce the concept of perimeter and the properties of squares and rectangles, with further practice available in the workbook pages indicated.