1. Lesson 5.1-5.2 Adding and Subtracting Fractions
Essential Question: How do you add and subtract fractions?

2. Before we start…
You and your friend order two medium pizzas. Each pizza has 8 slices. You ate of the pizzas and your friend ate of the pizzas. How much of the pizza did you eat together?

3. How do you add and subtract fractions?
Find your common denominator.
If there’s a mixed number, you can turn it into an improper fraction first.
Add/subtract the numerators, keeping your denominator the same.
Reduce your final answer.

4. − −

5. − 𝑎 9 + 7𝑎 9 6𝑥 11𝑦 − 10𝑥 11𝑦

6. − 𝑡 3 − 2𝑡 3 𝑦 8𝑎 +− 5𝑦 8𝑎

7. 7 8 +− − 5 6

8. 2𝑥 5 − 𝑥 6 5 𝑦 + 7 8

9. 5𝑑 8 − 2𝑑 5 10 𝑥 + 3 4

10. Biology A corn snake that is inches long grows g inches to a length of inches. How much does it grow?

11. Hiking Before lunch, Tara hiked 3 5 8 miles
Hiking Before lunch, Tara hiked miles. After lunch, she hiked another miles. How far did she hike altogether?

12. Carpentry A board is 36 5 8 inches long
Carpentry A board is inches long. You cut off a piece inches long. The saw blade destroys an additional inch of wood which is equal to its width. What is the length of the remaining piece of wood?

13. Construction You are building a stone wall 13 feet long
Construction You are building a stone wall 13 feet long. You build feet of wall on Monday and feet on Tuesday. How much wall do you have left to build?

14. How do you add and subtract fractions?

15. Ticket Out the Door −