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Year 5 - Maths

Measure the area of flat shapes using square centimetres

Link area of rectangles to multiplication

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 measure the area of shapes using square centimetres.

Key Notes

  • Area can be measured in square centimetres.
  • You write square centimetres as cm²
  • Fractions of square centimetres can be added to make whole square centimetres.

Vocabulary To Learn

  • Square centimetres: Square centimetres are the area equal to a square that is one centimetre on each side.
  • Rectilinear: A rectilinear shape is a 2D shape with straight sides and right angles.

Common Mistakes To Avoid

  • Some pupils count fractions of a square, such as a right-angles triangle, as a whole square unit.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Area can be measured in square centimetres. You write square centimetres as cm².

2. Use this key word in a maths sentence and explain it clearly. 'Square centimetres'

Square centimetres are the area equal to a square that is one centimetre on each side. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Some pupils count fractions of a square, such as a right-angles triangle, as a whole square unit. Correction: Cut out the shape to show that two 'parts' of a square sometimes go together to make a complete square unit.

More Lessons In This Unit

Browse all guides in the Year 5 Maths guide library.