Mathematics
Grade 7
15 min
Convert between Celsius and Fahrenheit
Convert between Celsius and Fahrenheit
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1
Introduction & Learning Objectives
Learning Objectives
Define Celsius and Fahrenheit temperature scales.
Identify situations where converting between Celsius and Fahrenheit is necessary.
Apply the correct formula to convert temperatures from Celsius to Fahrenheit.
Apply the correct formula to convert temperatures from Fahrenheit to Celsius.
Solve real-world problems involving temperature conversions between the two scales.
Explain the relationship between the Celsius and Fahrenheit scales, including their respective freezing and boiling points.
Ever wondered why some countries talk about 25°C for a warm day while others say 77°F? ☀️🌡️
In this lesson, you'll learn how to switch between the Celsius and Fahrenheit temperature scales. This skill is super useful for understanding weather reports, recipes, an...
2
Key Concepts & Vocabulary
TermDefinitionExample
TemperatureA measure of the hotness or coldness of an object or environment.The temperature outside today is 20°C, which feels cool.
Celsius (°C)A temperature scale where 0°C is the freezing point of water and 100°C is the boiling point of water. It is part of the metric system.Water freezes at 0°C.
Fahrenheit (°F)A temperature scale where 32°F is the freezing point of water and 212°F is the boiling point of water. It is part of the imperial system.A comfortable room temperature is often around 72°F.
Freezing PointThe specific temperature at which a liquid turns into a solid. For water, this is 0°C or 32°F.Ice forms when the temperature drops to the freezing point.
Boiling PointThe specific temperature at which a liquid turns into a gas. For water, this is 100°C or 2...
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Core Formulas
Celsius to Fahrenheit Conversion
$F = C \times \frac{9}{5} + 32$
Use this formula when you have a temperature in Celsius (°C) and you want to find its equivalent in Fahrenheit (°F). Remember to multiply first, then add.
Fahrenheit to Celsius Conversion
$C = (F - 32) \times \frac{5}{9}$
Use this formula when you have a temperature in Fahrenheit (°F) and you want to find its equivalent in Celsius (°C). Remember to subtract first, then multiply.
5 more steps in this tutorial
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Challenging
At what temperature do the Celsius and Fahrenheit scales show the exact same numerical value?
A.0°
B.-40°
C.32°
D.100°
Challenging
A news report states that the temperature in the Sahara Desert increased by 45°C from the morning low to the afternoon high. How many degrees Fahrenheit did the temperature increase by?
A.113°F
B.45°F
C.81°F
D.25°F
Challenging
A common mental shortcut for converting Celsius to Fahrenheit is the approximate formula F ≈ 2C + 30. If the actual temperature is 25°C, what is the difference between the temperature given by this approximation and the exact temperature?
A.3°F
B.0°F (it's the same)
C.5°F
D.17°F
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