New
New
Year 5
Calculate the areas of rectangles using multiplication
I can calculate the areas of rectangles using multiplication.
New
New
Year 5
Calculate the areas of rectangles using multiplication
I can calculate the areas of rectangles using multiplication.
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Lesson details
Key learning points
- To find the area of a rectangle you multiply the length by the width
- Known facts, mental and written strategies can be used to calculate area
- The area of a rectangle is similar to an array for multiplication
Keywords
Length / width - Length and width are two words used to describe the sides or dimensions of polygons.
Common misconception
Good multiplication skills are required for this lesson, including TO x O and HTO x O.
Pupils who are insecure with short multiplication will need pre-teaching. Consider giving them a scaffold such as a times tables grid.
Cycle 2 of the lesson can be enriched and made more tangible by substituting the maps with aerial maps of your local area, using digital software and marking out rectangles of area on them.
Teacher tip
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
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6 Questions
Q1.
A square is a type of .
circle
triangle
none of the answers
Q2.
6 x 7 = .
Q3.
23 x 4 = .
Q4.
How many centimetres are in one metre?
10
1,000
Q5.
How many millimetres are there in one metre?
10
100
10,000
Q6.
A rectangle has an area of 24 cm². What are the possible values of the length and width?
5 cm and 4 cm
5 cm and 5 cm
Exit quiz
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6 Questions
Q1.
What is the area of this shape? cm²
Q2.
What is the area of this square? cm²
Q3.
Which strategy has been used to calculate the area of this rectangle?
expanded multiplication
short multiplication
Q4.
The length of a mobile phone screen is 8 cm and the width is 16cm. Calculate the area of the screen. A = cm².
Q5.
Calculate the area of this rectangle. A = cm².
Q6.
The staff car park at a school has a length of 9 metres and a width of 25 metres. What is the area of the car park? m².