1. Copyright © Texas Education Agency, 2011. All rights reserved. 1 Adding Fractions Change all fractions to a common denominator Add all the numerators Write down the total fraction Reduce fraction to lowest terms

2. Fractions Adding and Subtracting Copyright © Texas Education Agency, 2011. All rights reserved.

3. Example: 1/8 + 1/16 + 3/4 + 1/16 Change to largest common denominator 2/16 + 1/16 + 4/16 + 1/16=16/16=1 Add numerators, place over common denominator, reduce to lowest terms Copyright © Texas Education Agency, 2011. All rights reserved. 3 Adding Fractions

4. Copyright © Texas Education Agency, 2011. All rights reserved. 4 Adding Fractions Example 2 3/8 + 1/2 + 5/8 + 3/4 Change to largest common denominator 3/8 + 4/8 + 5/8 + 6/8=18/8=2 2/8=2 ¼ Add numerators, place over common denominator, change from improper fraction to proper fraction, reduce to lowest terms

5. Copyright © Texas Education Agency, 2011. All rights reserved. 5 Subtracting Fractions Change all fractions to a common denominator Subtract the numerators Write down the remaining fraction Reduce fraction to lowest terms

6. Copyright © Texas Education Agency, 2011. All rights reserved. 6 Subtracting Fractions Example: 7/8 – 9/16 Change to largest common denominator 14/16 – 9/16 = 5/16 Subtract numerators, reduce to lowest terms if necessary

7. Copyright © Texas Education Agency, 2011. All rights reserved. 7 Subtracting Fractions Example 2: 1 3/16 – 1/4 Change mixed number to improper fraction and change all to the largest common denominator 19/16 – 4/16 = 15/16 Subtract numerators and reduce to lowest terms if necessary