1. Adding and Subtracting Fractions How do I add/subtract fractions? M5N4 G

2. Steps: Step 1: Find a common denominator for your fractions and make equivalent fractions using your new denominator. Step 1: Find a common denominator for your fractions and make equivalent fractions using your new denominator. –Hint: You need to find the LCM of your denominators.  What is the LCM of 1/3 and 1/5? –3:3,6,9,12,15 –5:5,10,15

3. Practice: 1 x 5= 5 3 x 5 15 +1 x 3= 3 5 x 3 15

4. Steps: Step 2: Add or subtract the numerators ONLY! The denominator stays the same. Step 2: Add or subtract the numerators ONLY! The denominator stays the same. –Hint: You never add or subtract denominators!

5. Practice: 1 x 5= 5 3 x 5 15 +1 x 3= 3 5 x 3 15 8 15 15

6. Steps: Step 3: Try and simplify your answer. Step 3: Try and simplify your answer. –Hint: You cannot always simplify.

7. Practice: 1 x 5= 5 3 x 5 15 +1 x 3= 3 5 x 3 15 8 15Can you divide 8 and 15 by any number besides 1? NO, it is already in the simplest form. 15Can you divide 8 and 15 by any number besides 1? NO, it is already in the simplest form.

8. We need more practice: Remember to follow these steps and look at your example. Remember to follow these steps and look at your example. Practice: Addition of fractions worksheet- We are going to do the first few together. Do not go ahead.