Question

Express $2$ km $200$ m $500$ mm in kilometres in the form of decimal number.

• A. $2.025$
• B. $22.50$
• C. $2.205$
• D. $2.2005$

Answer 1

The correct option is D $2.2005$

$500$ mm = $\frac{500}{1000}$ m = $0.5$ m
= $\frac{0.5}{1000}$ km = $0.0005$ km

$200$ m = $\frac{200}{1000}$ km = $0.2$ km

$2$ km + $0.2$ km + $0.0005$ km = $2.2005$ km

$2$ km $200$ m $500$ mm= $2.2005$ km