Explain how to calculate the area of a rectangle using multiplication | Maths

Starter quiz

9 × 8 = ______.
- '72' ✓
Match the array with times tables facts.
- 4 × 3 = 12
  
  ⇔
  
  a ✓
- 5 × 4 = 20
  
  ⇔
  
  b ✓
- 2 x 8 = 16
  
  ⇔
  
  c ✓
- 3 x 3 = 9
  
  ⇔
  
  d ✓
Which times table fact is being shown here?
- 3 x 5 = 15 ✓
- 5 x 3 = 15 ✓
- 3 + 5 = 15
True or false? This shape has an area of three square metres.
- False. The shapes meet at the vertices so they are three shapes. ✓
- True. There are 3 squares that each have the area of one square metre.
Which of these statements are true for a square?
- All of the sides are of equal length ✓
- All of the angles are equal ✓
- All of the angles are 180 degrees
- It is a kind of rectangle ✓
- None of the sides are parallel
Match each parts of the rectangle to the correct letter.
- side
  
  ⇔
  
  a ✓
- vertex
  
  ⇔
  
  b ✓
- area
  
  ⇔
  
  c ✓

Which of these rectangles has the dimensions correctly labelled ?
- a ✓
- b
- c ✓
What is the area of this shape? ______ cm²
- '12 ' ✓
What is the area of this shape? ______ cm²
- '15' ✓
What is the area of the shaded shape? ______ cm²
- '16' ✓
What is the area of this shape? ______ cm²
- '28' ✓
Order the shapes by area, starting with the smallest area.
- 1
  
  ⇔
  
  a
- 2
  
  ⇔
  
  d
- 3
  
  ⇔
  
  c
- 4
  
  ⇔
  
  b

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Some pupils may still not have the automaticity of times tables facts useful for this lesson.

Pre-teaching some tricky times tables facts by using counters for arrays will be useful. Consider allowing scaffolds within the lesson.

Array - Items (including numbers) arranged in columns or rows are called arrays.
Length - Length is the distance from one point to another.
Width - Width is the distance from side to side.