Explain that different lengths can be composed additively and multiplicatively | Maths

Starter quiz

Convert 2.5 metres into centimetres. ______ cm
- '250' ✓
Match the descriptions.
- 100 divided into 2 equal parts
  
  ⇔
  
  each part has a value of 50 ✓
- 100 divided into 4 equal parts
  
  ⇔
  
  each part has a value of 25 ✓
- 100 divided into 5 equal parts
  
  ⇔
  
  each part has a value of 20. ✓
What is the missing number on the number line?
- '75' ✓
Complete: 0.1 is __________ of 10
- one tenth the size
- one hundredth the size ✓
- one hundred times the size
- ten times the size
Which equations represent this bar model?
- 20 × 5 = 100 ✓
- 100 ÷ 20 = 5 ✓
- 20 + 20 + 20 + 20 = 100
- 2 × 20 + 3 × 20 = 100 ✓
What is the missing number in this equation? 25 × ______ = 175
- '7' ✓

Match the descriptions.
- 1 m divided into 2 equal parts
  
  ⇔
  
  each part has a value of 0.5 m. ✓
- 1 m divided into 4 equal parts
  
  ⇔
  
  each part has a value of 0.25 m. ✓
- 1 m divided into 5 equal parts
  
  ⇔
  
  each part has a value of 0.2 m. ✓
Look at the number line. Which letter is pointing to 75 cm?
- a
- b
- c ✓
- d
In metres, what is the value of each of the partitioned parts? ______ m
- '0.5' ✓
Tick the equations that could represent this number line.
- 0.25 m × 4 = 1 m ✓
- 1 m ÷ 4 = 25 m
- 0.25 m + 0.25 m + 0.25 m = 1 m
- 1 m = 0.25 m + 0.25 m + 0.25 m + 0.25 m ✓
Tick the image that represents the equation: 0.2 m × 5 = 1 m
1.4 m is composed of:
- 5 lots of 0.2 m add 2 lots of 0.2 m ✓
- 7 lots of 0.2 m ✓
- 10 lots of 0.2 m minus 3 lots of 0.2 m ✓
- 4 lots of 0.2 m plus 4 lots of 0.2 m

Loading worksheet ...

Loading presentation ...

Pupils think that when a whole is divided into x parts, they need to have x interval markers.

Encourage pupils to make connections between the bar model and the number line, drawing attention to where each whole has been divided.