1. Add/Subtract Like and Unlike Fractions
Section 4.3 and 4.4
Brain Pop Video Link

2. Add and Subtract Like Fractions
Words
To add or subtract like fractions, add or subtract the numerators and write the result over the denominators
Examples
Fractions that have the same denominators are called like fractions
Numbers: Algebra:

3. Examples
Add. Write in simplest form.
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4. Practice
3. Eduardo used fabric to make three costumes. He used yard for the first, yard for the second, and yard for the third costume. How much fabric did Eduardo use altogether?
4. Of the 50 states in the U.S., 14 have an Atlantic Ocean coastline and 5 have a Pacific Ocean coastline. What fraction of U.S. states have either an Atlantic Ocean or Pacific Ocean coastline?

5. Add or Subtract Unlike Fractions Notes
To add or subtract fractions with different denominators,
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6. Add or Subtract Unlike Fractions
Before you can add two _________________________, or fractions with different denominators, rename one or both of the fractions so that they have a common denominator
Examples: Add. Write in simplest form
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7. Practice
3. Cassandra cuts inch off the top of a photo and inch off the bottom. How much shorter is the total height of the photo now? Explain.
4. Create your own partner problem to solve:

8. Essential Questions
What is a simple rule for adding and subtracting like fractions?
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Compare adding unlike fractions and adding like fractions.