Worksheet

Add And Subtract Signed Fractions Worksheet

6 problems

Those numbers which are either negative or positive are known as signed numbers. Similarly signed fractions have positive or negative sign in numerator. They are classified into two types. They are: positive signed fractions and negative signed fractions. For instance, -3/5 and -5/4 are negative signed fractions. While 3/2 and 4/6 are positive signed fractions. We can easily subtract or add signed fractions. 

Grade 7
Signed Number Operations
7.NS.A.1.D

Teaching Adding and Subtracting Signed Fractions

 

  •  Whenever, we add or subtract two fractions. First we need to take teh L.C.M of both the denominators to make it same.
  • Once both the fractions are multiplied by the common number, the denominators becomes same and it becomes easy to add and subtract them like a common number, keeping the denominator same.



 

Let us take an example mentioned below to understand more about adding and subtracting signed numbers.


 

Example 1: Add +3/4 - 5/3.

 

  • According to the question, 12 is the L.C.M for 4 and 3. Multiplying both the fractions by 3 and 4 respectively will make the denominators same.
  • + 9/12 + (-20/12)
  • +9 -20 / 12 = -11/12 


 

Why Should You Use an Add and Subtract Signed Fraction Worksheet...

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