Question

How many decimetres are there in a metre?

• A. 40
• B. 20
• C. 10
• D. 50

Hint:

1 metre = 10 decimetres, because "deci-" means one-tenth in the metric system.

Answer 1

The Correct Option is C

Step 1: Understanding metric units
The metric system includes various units of length such as metre, centimetre, millimetre, and decimetre.

Step 2: Definition of a decimetre
A decimetre is defined as one-tenth of a metre. That is:
1 decimetre = 0.1 metre

Step 3: Conversion calculation
To find how many decimetres are there in 1 metre:
\[ 1 \text{ metre} = \frac{1}{0.1} = 10 \text{ decimetres} \]
\[ \boxed{\text{Correct Answer: (C) 10}} \]