Josh's mom gives him $20 to go shopping at the mall. He buys a hat for $10 and a pencil for $2. Then he buys four cookies. If each cookie costs $1.25, how much money does Josh have left? Let's be accurate as possible.
After buying a hat, Josh has $20 - $10 = $10. After buying a pencil, Josh has $10 - $2 = $8. The total cost of cookies is 4 * $1.25 = $5. After buying the cookies, Josh has $8 - $5 = $3.
The answer: 3.