Name: Doris Who is asking: Student Level of the question: Middle Question: I just know how to do problems with fahrenheit or celcius. Could you show me step by step how to do these? Then I can do it if you can show me each step of the way. Hi Doris. Celsius and Fahrenheit are just two scales that measure the same thing: temperature. There are two differences: a) the size of the units. 1 degree Fahrenheit is 5/9 of a degree Celsius. b) where Zero is. 0 degrees celsius is 32 degrees Fahrenheit. Now to convert between them, we just use these two. (Temperature in Fahrenheit - 32 ) (5/9) = temperature in Celsius. for example 212 degrees Fahrenheit is ( 212 - 32 ) (5/9) = 100 degrees Celsius. (Temperature in Celsius) (9/5) + 32 = temperature inFahrenheit. for example 0 degrees Celsius is 0 (9/5) + 32 = 32 degrees Fahrenheit. In fact, the celsius scale was chosen because it makes things simple: the freezing point of water is 0 and the boiling point is 100. Easier numbers to remember than 32 and 212 in my opinion! PS: Here in Saskatchewan, Canada, our winter temperature sometimes reaches -40 degrees! At that temperature, whether you use Fahrenheit or Celsius doesn't matter. Can you see why? :) Stephen and Penny