Question

Convert $0.6$ km to centimeters.

• A. $60cm$
• B. $600cm$
• C. $6,000cm$
• D. $60,000cm$
• E. $600,000$ cm

Answer 1

The correct option is D $60,000cm$

The metric system uses powers of 10, so conversion between units can be done by moving the decimal point. First convert 0.6 km to meters. To do this, multiply 0.6 by 1000, or, equivalently, move the decimal point three places to the right. Add zeros as necessary.
$0.\underset{–}{6}\underset{–}{0}\underset{–}{0}=600$
Therefore, there are 600 m in 0.6 km. Convert 600 m to centimeters by multiplying by 100 or, equivalently, by moving the decimal two places to the right.
$600.\underset{–}{0}\underset{–}{0}=60,000$
Thus, the correct answer is 60,000 cm.