For Gwen's birthday she received 29 dollars from her mom. Her dad gave her 1 more dollars. If she spent 23 dollars. How much money did she still have?
Gwen's mom gave her 29 dollars. 
Gwen's dad gave her 1 more dollar. 
That means she had a total of 30 dollars. 
If she spent 23 dollars, she would have 7 dollars left.