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' ✓