The following real number is expressed in decimal form. Determine whether it is rational or not. If it is rational,express it in the form of $\frac{p}{q}$. $3.127$
(A) The decimal form $3.127$ is a terminating decimal.
Since every terminating decimal can be expressed as a fraction,it is a rational number.
To express $3.127$ in the form of $\frac{p}{q}$,we remove the decimal point and divide by $1000$ because there are three digits after the decimal point.
$3.127 = \frac{3127}{1000}$
Since every terminating decimal can be expressed as a fraction,it is a rational number.
To express $3.127$ in the form of $\frac{p}{q}$,we remove the decimal point and divide by $1000$ because there are three digits after the decimal point.
$3.127 = \frac{3127}{1000}$
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