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Measuring Length With Units
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Measuring Length With Units
Layla, Evie and Arjun are checking equipment on a reef research boat. Use the appropriate metric units. For the ruler questions, imagine the ruler starts at 0 cm.
Measure and compare
Read each measurement carefully, then solve the questions.
1.Layla measures a coil of rope. It begins at 0 cm and ends at 18 cm on the ruler. How long is the rope?
2.Evie measures a sample tube that is 12 cm long. Arjun's tube is 15 cm long. Which tube is longer, and by how many centimetres?
3.A waterproof case is 9 cm long. The ruler below shows its length. Choose the best unit for measuring its length.
- Centimetres (cm)
- Metres (m)
4.The boat's safety rail is 3 m long. How many centimetres long is the rail? Remember: 1 m = 100 cm.
Choose a tool and plan
Think about what is being measured and which tool suits its size.
5.Which tool would be best for measuring the length of the whole boat: a 30 cm ruler or a tape measure marked in metres?
- A 30 cm ruler
- A tape measure marked in metres
6.Three objects on the boat measure 8 cm, 14 cm and 11 cm. Write them from shortest to longest.
7.Layla's pencil is 16 cm long. Evie's pencil is 16 cm long too. Complete the sentence: Layla's pencil is Evie's pencil.
8.The boat's short measuring tape is 1 m long. Is it longer or shorter than a 75 cm ruler? Explain using centimetres.
9.Arjun needs to measure a 24 cm-long clipboard. Name a suitable tool and write the unit he should use.
10.A deck line is 2 m long. Layla measures a second line that is 1 m long. How much longer is the deck line?
11.Draw a line that is 5 cm long. Use a ruler.
3 printable pages
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