If you are incorporating adding, subtracting, multiplying and dividing into your lessons, try letting the students plan vacation of their own. They get to choose where to go and what kind of things they want to do within a limit.
Here is an editable file of the "COPS" strategy in order to make it your own. You can make the document simpler or more difficult. You can make it align with your standards and what you are teaching. Make it your own!