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Measuring Length Relay Race

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Measuring Length Relay Race

A relay team is planning a safe route for a community fun run beside the coast. Complete each measurement challenge in order. Remember: 10 mm = 1 cm and 100 cm = 1 m. Show how you worked out answers where useful.

Leg 1: Choose and convert

Each relay leg has a measurement challenge.

1.A team measures a small shell as 46 mm long. How long is it in centimetres?

2.The route flag is 1.35 m tall. Convert its height to centimetres.

3.Which is the most sensible unit for measuring the distance of a 2 km fun-run route? Choose one.

Millimetres
Centimetres
Metres
Kilometres

4.A runner’s baton is 28.4 cm long. Convert this measurement to millimetres.

Leg 2: Read the route plan

Use the route measurements below to solve the next challenges.

Item

Measured length

Safety cone

42 cm

Starting banner

2.4 m

Finish ribbon

185 cm

5.How many millimetres long is the safety cone?

6.The team needs to compare the banner and finish ribbon. Which is longer, and by how many centimetres?

Leg 3: Measure carefully

Accurate measurements help the relay team set out the route safely.

7.A ruler begins at 0 cm. The end of a marker reaches 13.7 cm. What is the marker’s length in millimetres?

8.True or false? If an object starts at the 2 cm mark and ends at the 9 cm mark, its length is 9 cm.

TrueFalse

9.Put these measurements in order from shortest to longest: 0.8 m, 75 cm, 820 mm. Show each in centimetres before ordering.

Final sprint: Solve the relay puzzle

Put your conversions and reasoning together.

10.A route section is 3 m 45 cm long. Write its total length in centimetres and in millimetres.

11.The team has 6 m of bunting. They use 235 cm along the start line and 180 cm along the finish line. How many centimetres of bunting remain?

12.Design one extra relay challenge using a length measurement. Write the question and give its answer in a different metric unit from the one used in your question.