Sequence of Operation

When you use sequence of operation, you figure out the order you do your question. For example, I bought 3 bags of candy, $2.50 each. My friend bought 2 bags of skittles, $2.25 each. how much money did we spend in total. First, you figure out how much my candy was. Then you find out how much the skittles are. Then figure out how much it costs in total.