Relationship between Celsius and Fahrenheit

Class: Basic 5

Subject: Mathematics

Topic: Temperature 2 (Relationship between Celsius and Fahrenheit)

On the temperature scale, degrees Celsius can be converted to degrees Fahrenheit and vice versa.

To change the temperature from degrees Celsius to degrees Fahrenheit, we use the formula: F = 9/5 * C + 32

The temperature from degrees Fahrenheit to degrees Celsius is given as C = 5/9(F – 32)

For example:

1.) Convert 40 degrees Celsius to degrees Fahrenheit.

Solution:

F = 9/5 * 40 + 32

= ( 9 * 8) + 32

= 104 oF

2.) Convert 95degrees Fahrenheit to degrees Celsius

C = 5/9 (95 – 32)

= 5/9 * 63

= 5 * 7

= 35 oC

Answer the following questions:

1.) Convert these temperatures to degrees Fahrenheit :

(a) 25 oC (b) 80 oC (c) 75 oC

2.) Convert these temperatures to degrees Celsius :

(a) 68 oF (b) 158 oF (c) 176 oF

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