(+301)+(−51)= ? (+301)+(-51)=\text{ ?} (+301)+(−51)= ?
First, remember the rule:+(−x)=−x +(-x)=-x +(−x)=−x
Place 301 on the number line and move 51 steps to the left:000301301301-51
Rewrite the exercise in the appropriate form and solve it:301−51=250 301-51=250 301−51=250
250 250 250