You want to take a trip to New Zealand. Your friend does some research and tells you the range of the prices for flights is $651. Which of the following could be the prices for flights that your friend found?

To find the answer, you will have to subtract the lowest value from the highest value in each set of prices.

The range is the distance from the lowest value to the highest value. If you subtract these two extremes, you will have the range.

Just check all the sets that you have until you find a range of 651.