Learn how to calculate time across time zones in this math and geography worksheet! Students will examine a map of the United States that has been divided into four time zones: Pacific, Mountain, Central, and Eastern. Learners will then use the map to determine the time in one time zone based on the time in another. Students will also identify the time zone they live in. Designed for third, fourth, and fifth graders, this math and social studies worksheet offers an easy-to-follow introduction to time zones and time differences.