1. Pg. 152

2. Chapter 3, Lesson 2D Pages 152-156

3. Learning Objectives and Vocab.  Learning Objective #5: I can add and subtract mixed numbers. ○ Standard: 7.NS.1, 7.NS.1b, 7.NS.1c, 7.NS.3, 7.EE.3  Vocabulary:

4. Pg. 152

5. Adding and Subtracting Mixed Numbers  First, add and subtract fractions May need to find the LCD.  Then, add or subtract whole numbers.

6. Examples

7. Mixed Numbers  Find 2 1/3 - 1 2/3  Issues???

8. Barrowing  Sometimes when subtracting mixed numbers, the second fraction is larger than the first. What do we do in 23-19  In this case we need to rename and barrow from the whole number.

9. Barrow and Rename  7 ½  8 ¼  6 4/5

10. Examples

11. 1. Check to see if there are common denominators  Yes, go to step #6 OR #7  No, go to step #2 2. Find LCD of the two fractions. 3. Make equivalent fractions with common denominators. ○ Go to step 7 if adding/subtracting fractions.

12. 4. If subtracting mixed numbers, check to see if second fraction is larger than first.  If no, go to step #6  If yes, go to step #5 5. Barrow from whole number or make both mixed numbers into improper fractions.  If barrowing, barrow from the whole number and add a whole to the fraction  (in the form of an improper fraction, 4/4)

13. 6. Add or subtract whole numbers 7. Add or subtract fractions  Numerator plus/minus numerator  Denominator stays the same 8. REDUCE! Simplify fractions (divide numerator and denominator by the same number) Make improper fractions into proper fractions ○ If improper is with a whole number, remember to add the 2 whole numbers.

14. Homework