Converting Metres to Kilometres

Year 4 Maths Understanding units of measurement Converting between metres and kilometres

Learning Objectives

Understand that 1 kilometre = 1000 metres Convert metres to kilometres by dividing by 1000 Convert kilometres to metres by multiplying by 1000 Solve real-world problems involving conversions Explain our reasoning when converting units

What Do You Already Know?

How long is a metre? Have you heard of kilometres before? What might be measured in kilometres? Think about distances you travel - to school, to the shops, on holiday

The Relationship: 1 Kilometre = 1000 Metres

Key Vocabulary

Metre (m) - a unit for measuring length Kilometre (km) - a longer unit for measuring distance Convert - to change from one unit to another Multiply - to make bigger (× 1000) Divide - to make smaller (÷ 1000)

Converting Between Units

{"left":"Metres to Kilometres: DIVIDE by 1000\n5000m ÷ 1000 = 5km\n3500m ÷ 1000 = 3.5km","right":"Kilometres to Metres: MULTIPLY by 1000\n4km × 1000 = 4000m\n2.5km × 1000 = 2500m"}

Let's Practice Together!

Convert 2000m to km Convert 6km to m Convert 1500m to km Convert 3.2km to m Use your mini whiteboards to show your answers

Common Mistakes to Avoid

Don't confuse multiply and divide Remember: 1km = 1000m (not 100m) Be careful with decimal points Check if your answer makes sense A kilometre is much longer than a metre

Real-World Problem Solving

Sarah walks 2500m to school. How many kilometres is this? The park is 1.5km from Tom's house. How many metres is this? A race track is 400m long. How many laps make 2km? Work in pairs and explain your thinking

What Have We Learned?

1 kilometre = 1000 metres To convert m to km: divide by 1000 To convert km to m: multiply by 1000 Always check our answers make sense We can solve real-world measurement problems