Hannah brought $30 to the county fair. She spent half of it on rides and another $5 on dessert. How much, in dollars, is left?
She spent $30/2=$<T>divide(30, 2)=15.0 on rides.
She spent a total of $15+$5=$<T>add(15, 5)=20 including dessert.
She has $30-$20=$<T>subtract(30, 20)=10 left.
