However, temperatures are still measured on the Fahrenheit scale in the U.S. Water freezes at 0 o Celsius and boils at 100 o Celsius which is a difference of 100 o . Fahrenheit and boils at 212 o Fahrenheit which is a difference of 180 o . Add 32 o to adjust for the offset in the Fahrenheit scale. There is a mental math method to convert from Celcius to Fahrenheit. Add 32 o to adjust for the offset in the Fahrenheit scale.
Negative numbers follow a pattern that is opposite of positive numbers.
Example of converting negative Celsius temperatures to Fahrenheit Convert -15 o C to Fahrenheit. You have correct and incorrect. Extra time is awarded for each correct answer. Play longer by getting more correct. Copyright 2000 J.Banfill.