Year 5 - Maths
Calculate the areas of rectangles using multiplication
Link area of rectangles to multiplication
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will calculate the area of a rectangle using multiplication and use their knowledge of area to solve problems.
Lesson Summary
You will learn to calculate the areas of rectangles using multiplication.
Key Notes
- 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
Vocabulary To Learn
- Length / width: Length and width are two words used to describe the sides or dimensions of polygons.
Common Mistakes To Avoid
- Good multiplication skills are required for this lesson, including TO x O and HTO x O.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
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.
2. Use this key word in a maths sentence and explain it clearly. 'Length / width'
Length and width are two words used to describe the sides or dimensions of polygons. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Good multiplication skills are required for this lesson, including TO x O and HTO x O. Correction: Pupils who are insecure with short multiplication will need pre-teaching. Consider giving them a scaffold such as a times tables grid.
More Lessons In This Unit
- Calculate missing dimensions in rectangles and compound rectilinear shapes Study Guide
- Calculate the area of compound rectilinear shapes Study Guide
- Calculate the area of shapes made from 2 or more rectangles Study Guide
- Calculate the area of shapes made from 2 rectangles by decomposing the shape in different ways Study Guide
- Choose an efficient way to decompose a compound shape to calculate the area Study Guide
- Explain how to calculate the area of a rectangle using multiplication Study Guide
- Measure the area of flat shapes using square centimetres Study Guide
- Measure the area of flat shapes using square metres Study Guide
- Use knowledge of area to solve problems in a range of contexts Study Guide
Browse all guides in the Year 5 Maths guide library.