Click on the add response. Watch the video. Make sure you pause the video and practice the two questions given. Compatible numbers are numbers that usually end in a 5 or a 0, that help us to easily solve math questions. Another way to say this is that these numbers are to the nearest 5 or 10. Complete the worksheet attached by choosing 10 out of the 14 questions. When you are finished, click the green check mark to send to your teacher.