Unit 6 Contents

Temperature Time

Use a number line to represent and solve each temperature change problem.

1. It was −26°F at 10:00 this morning. The high temperature for the day was 17° higher than the temperature at 10:00 this morning. What was the high temperature for the day?
2. It was 20°F at 8:00 last night. The temperature dropped 13° overnight to reach the day's low temperature. What was the low temperature for the day?
3. The weather forecaster said that the current temperature is −15°F. The temperature is expected to drop 18 more degrees to reach the low temperature for the day. What is the low temperature expected to be?
4. The temperature outside is −14°F. How does the temperature need to change to reach 3°F?
5. Put these temperatures in order from coldest to warmest.
1. 3°F
2. 14°F
3. −8°F
4. 4°F
5. −11°F
6. International Falls, Minnesota, is one of the coldest places in the country. At night, the temperature might fall as quickly as one degree every five minutes. The thermometers shown begin to chart the falling temperature on such a night.