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Measuring Length Practically

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Measuring Length Practically

Measuring Length Practically

Ruler and measuring tape illustration

📏 Part 1: Choosing the Right Unit

1. Circle the best unit to measure each object:

a) Length of a pencil

centimetres (cm)

metres (m)

b) Width of a classroom door

centimetres (cm)

metres (m)

c) Length of a notebook

centimetres (cm)

metres (m)

d) Length of the classroom

centimetres (cm)

metres (m)

📐 Part 2: Recording Measurements

2. Use a ruler or measuring tape to measure these classroom objects. Record your measurements with the correct units:

a) Length of your desk: ____________

b) Width of your textbook: ____________

c) Height of your chair: ____________

d) Length of the whiteboard: ____________

e) Width of the classroom door: ____________

3. Explain why you chose centimetres or metres for each measurement above:

🔢 Part 3: Understanding Decimal Measurements

4. Convert these measurements to decimal form:

a) 1 metre and 25 centimetres = _______ m

b) 2 metres and 50 centimetres = _______ m

c) 75 centimetres = _______ m

d) 150 centimetres = _______ m

5. Write these decimal measurements in metres and centimetres:

a) 1.8 m = _____ m and _____ cm

b) 2.35 m = _____ m and _____ cm

c) 0.65 m = _____ m and _____ cm

🎯 Part 4: Estimation and Accuracy

6. Before measuring, estimate the length of these objects. Then measure them accurately:
Object My Estimate Actual Measurement
Your shoe _________ _________
Your pencil case _________ _________
Width of your table _________ _________
7. Which of your estimates were closest to the actual measurements? Why do you think this happened?

🤔 Part 5: Problem Solving

8. Check all the measuring tools that would be appropriate for each task:

Measuring the length of a paperclip:

30cm ruler

Measuring tape

Metre stick

Measuring the length of the school corridor:

30cm ruler

Measuring tape

Metre stick

9. Sarah measured her desk and got 1.2 metres. Tom measured the same desk and got 120 centimetres. Who is correct? Explain your answer:
10. Draw a line that you estimate to be 10 centimetres long. Then use a ruler to check how close you were:

My line was actually _______ cm long.

The difference from 10 cm was _______ cm.

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