A compound shape is made up of two or more shapes.

Choose an efficient way to decompose a compound shape to calculate the area

Maths

In this unit pupils will calculate the area of a rectangle using multiplication and use their knowledge of area to solve problems. In the future unit pupils will explain what volume is using a range of contexts and describe the units used to measure volume. They will explain how to calculate the volume of a cuboid.

In the prior unit pupils explained area and measured using counting as a strategy. They made different shapes with the same area and compared the area of different shapes. In this unit pupils will calculate the area of a rectangle using multiplication and use their knowledge of area to solve problems.

Link area of rectangles to multiplication

 A {{}} shape is made up of two or more shapes. Complete the statement.

True or False.
This is the only way to split the compound shape into two rectangles.

Which calculation would you use to find the area of this shape in the way it has been split into rectangles?

Which pair of multiplications will help calculate the area of this compound rectilinear shape?

This compound shape is made from a large square and a smaller rectangle. Which multiplication facts could you use to help find the total area of this shape?

Which of these is NOT a compound rectilinear shape?

What is the total area of this compound shape?

This lesson will soon be taken down.

Choose an efficient way to decompose a compound shape to calculate the area

Lesson outcome