1. Unit 5 Lessons 18 & 19

2. Objectives Add and Subtract More Than Two Fractions
Solve Word Problems Involving Addition and Subtraction of Fractions

3. Video Lesson Please turn to lesson 18 in your Eureka book
Watch this video

4. Let’s Review
If the denominators are already the same, then you’re ready to add or subtract.
Add or subtract the numerators. Keep the denominators the same.
Simplify (reduce) the fraction, if possible.
If you end up with an improper fraction, change it to a mixed number.

5. Examples 1 2 3 + = 5 5 5
This answer cannot be reduced any further.

6. The GCF of 4 and 14 is 2, so we divide by 2 to reduce.9 4 5 2 ÷ 2 = = 14 14 14 2 7 ÷
The GCF of 4 and 14 is 2, so we divide by 2 to reduce.

7. 8 3 11 + = 9 9 9
This is an improper fraction (the top is bigger than the bottom), so we want to change it to a mixed number.
To do this, divide the bottom into the top. 1
Answer: 1 2 9 11 9 9 2

8. Look at an example for Eureka

9. Some more examples from Eureka

10. Your Turn
Complete your assigned pages in your Eureka book by yourself or with a partner.
Once finished make sure to check-in with your teacher.
After you have been approved by your teacher you may complete the Exit Ticket.