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Thermometer Differences Worksheet

This Thermometer Differences Worksheet has 3rd graders read Celsius and Fahrenheit thermometers and subtract to find each change in temperature, with an answer key included.

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About this resource

Description

The Thermometer Differences Worksheet gives 3rd graders practice reading two thermometers and subtracting to find how much the temperature changed. Finding a change in temperature means reading each thermometer carefully, counting the small marks between the numbered degrees, and then taking the lower temperature away from the higher one.

How to Use This Worksheet

In the first part, students read four thermometers. The first two use a Celsius scale and show the air at 8:00 in the morning and at 3:00 in the afternoon, and the last two use a Fahrenheit scale. Every mark stands for 2 degrees, so children must count by twos instead of copying a printed number. In the second part, students subtract the two readings in each set to find how many degrees the air warmed up. The last problem is a beach word problem that asks students to find the change and explain how they found it. This 3rd grade measurement worksheet works well for math centers, a science lesson about weather, or homework.

What’s Included

  • Four Celsius and Fahrenheit thermometers to read
  • Two problems that find the difference between two thermometer readings
  • One written-response temperature change word problem
  • A complete answer key

Why It Helps Kids

First, it builds careful measurement skills, because each mark on the scale is worth more than one degree. Second, it connects subtraction with regrouping to real weather, so the math feels useful. Third, the written explanation helps students put their thinking into words, which is a key skill on state tests.

Ideas for Teachers and Parents

Hang a real thermometer outside the classroom window and have students record the temperature in the morning and again after lunch for a week. Each day, ask them to find the difference and decide whether the air warmed up or cooled down. Families can compare the morning and evening temperatures on a weather app and talk about which scale it uses. Use the Thermometer Differences Worksheet as a quick check after a lesson on reading scales.

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