Temperature Conversion
#ARTH-11-1
Category
Description
An introduction to temperature conversion.
Course(s)
Mini-Lesson
085
2.3
Arithmetic
091
x
Definition(s)
093
8.6
Sub-category
095
2.5
097
2.9
Formulas
100
x
ADN
E18
x
PHT
x
Celsius-Fahrenheit conversion
In the USA, we measure temperature in degrees Fahrenheit. In many
other places around the world, and in a lot of sciences, temperature is
measured in degrees Celsius. That is why our freezing point of water
(32°𝐹) and our boiling point of water (212°𝐹) are such odd numbers.
They make much more sense in degrees Celsius!
Here are the two conversion formulas:
Celsius to Fahrenheit: 𝐹 = 9 ∙ (𝐶 ÷ 5) + 32
Fahrenheit to Celsius: 𝐶 = 5 ∙ [(𝐹 − 32) ÷ 9]
Rule
Example
Choose the correct formula. Plug the given value into the formula, then
use the order of operations to get the final result.
Convert each of the following temperatures using the correct formula.
a. 𝟏𝟓℃ = ? ℉
𝐹 = 9 ∙ (𝐶 ÷ 5) + 32
𝐹 = 9 ∙ (15 ÷ 5) + 32
𝐹 = 9 ∙ (3) + 32
𝐹 = 27 + 32
𝐹 = 59
𝟏𝟓℃ = 𝟓𝟗℉
b. 𝟏𝟎𝟒℉ = ? ℃
𝐶 = 5 ∙ [(𝐹 − 32) ÷ 9]
𝐶 = 5 ∙ [(104 − 32) ÷ 9]
𝐶 = 5 ∙ [(72) ÷ 9]
𝐶 = 5 ∙ [8]
𝐶 = 40
𝟏𝟎𝟒℉ = 𝟒𝟎℃
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Practice
Remember!
Choose the temperature formula that begins with your desired answer.
Problems
Convert each of the following temperatures using the correct formula.
1. 25℃ = ? ℉
2. 212℉ = ? ℃
3. 32℉ = ? ℃
See also
Practice
ARTH-2-13: order of operations - whole numbers
Answers
77℉
100℃
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0℃