Question

Which part of a metre is a millimetre?

• A. Thousandth
• B. Tenth
• C. Hundredth
• D. Fiftieth

Hint:

1 millimetre is one
-thousandth of a metre.

Answer 1

The Correct Option is A

Step 1: Understanding the Metric System. 
1 millimetre (mm) is one
-thousandth of a metre, meaning: \[ 1 \, \text{mm} = \frac{1}{1000} \, \text{metre}. \] Step 2: Verifying the Options. 

- Option (1): One millimetre is one
-thousandth of a metre, making this the correct answer. 
- Option (2): A tenth is 0.1, which is a centimetre (1 cm = 10 mm). 
- Option (3): A hundredth is 0.01, not millimetre. 
- Option (4): Fiftieth is incorrect. 
Conclusion: 
Therefore, the correct answer is (1) Thousandth.