2. Lesson Menu Main Idea Example 1:Add Mixed Numbers Example 2:Subtract Mixed Numbers Example 3:Rename Mixed Numbers to Subtract Example 4:Rename Mixed Numbers to Subtract Example 5:Real-World Example

3. Main Idea/Vocabulary Add and subtract mixed numbers.

4. Example 1 Add Mixed Numbers Find Write in simplest form. Add the whole numbers and fractions separately. Simplify. Estimate 3 + 15 = 18

5. Example 1 Add Mixed Numbers Answer: Check for Reasonableness: 18

6. Example 1 CYP FindWrite in simplest form. A. B. C. D.

7. Example 2 Subtract Mixed Numbers Find Write in simplest form. Simplify. Estimate 10 – 5 = 5 Rename the fraction using the LCD. Then subtract.

8. Example 2 Subtract Mixed Numbers Answer: Check for Reasonableness:

9. Example 2 CYP Find Write in simplest form. A. B. C. D.

10. Example 3 Rename Mixed Numbers to Subtract Find Since is less than, rename before subtracting. Estimate

11. Example 3 Rename Mixed Numbers to Subtract Change 1 to.

12. Example 3 Rename Mixed Numbers to Subtract Simplify. Subtract the whole numbers and then the fractions. Rename as. Check for Reasonableness Answer:

13. Example 3 CYP Find A. B. C. D.

14. Example 4 Find Rename Mixed Numbers to Subtract Using the denominator of the fraction in the subtrahend, 11 = Since is less than rename 11 before subtracting. Estimate 11 – 9 = 2

15. Example 4 Rename Mixed Numbers to Subtract Simplify. Subtract. Rename 11 as. Answer: Check for Reasonableness

16. Example 4 CYP Find A. B. C. D.

17. Example 5 CRAFTS Marlee is making necklaces and bracelets for a class craft sale. She uses feet of string for the necklaces and feet of string for the bracelets. What is the total length of string that Marlee used?

18. Example 5 Answer: The total length of the string is feet.

19. Example 5 CYP SEWING Nicole is making pillows to give to her friends. She has feet of red fabric and feet of yellow fabric. How many feet of fabric does she have in all? A.B. C.D.