<P> In mathematics and computer programming , the order of operations ( or operator precedence ) is a collection of rules that reflect conventions about which procedures to perform first in order to evaluate a given mathematical expression . </P>
<P> In mathematics and computer programming , the order of operations ( or operator precedence ) is a collection of rules that reflect conventions about which procedures to perform first in order to evaluate a given mathematical expression . </P>
why do we need the order of operations rule
why do we need the order of operations rule
in order to evaluate a given mathematical expression
in order to evaluate a given mathematical expression