The golfer's score can be represented by $\displaystyle-{3}+{\left(-{1}\right)}+{0}+{2}+{0}=-{3}+{\left(-{1}\right)}+{2}\usepackage{cmbright}\Huge\$ , using the identity property of zero. First you should add the negative numbers. The sum of their absolute values is $\displaystyle{3}+{1}={4}\usepackage{cmbright}\Huge\$ . Then add a negative sign to get $\displaystyle-{4}\usepackage{cmbright}\Huge\$ . Then add $\displaystyle-{4}+{2}\usepackage{cmbright}\Huge\$ . The difference of their absolute values is $\displaystyle{4}-{2}={2}\usepackage{cmbright}\Huge\$ , and the sum must be negative (because 4 is bigger than 2). So the golfer was under par by 2 strokes .