Dividing Mixed Numbers

2. Dividing Mixed Numbers Objective(s): 1. Students will estimate quotients of mixed numbers 2. Students will understand the term reciprocal 3. Students will divide mixed numbers Lesson objectives

3. 1. mixed --> improper 2. keep, change, flip 3. top x top bottom x bottom 4. simplify

4. What do you need to know in order to divide 
mixed numbers? - How to change a mixed number to an 
improper fraction - How to find the reciprocal of a fraction - How to reduce (or cross-reduce) - How to multiply fractions - How to simplify fractions

5. Dividing Fractions with Mixed Numbers Follow the steps for changing mixed numbers to improper fractions. Follow the steps for dividing fractions. NOTE: DO NOT CROSS REDUCE OR SIMPLIFY BEFORE DIVIDING Example: 3 1/5 ÷ 2 3/4 3 x 5 = 15 + 1 = 16/5 2 x 4 = 8 + 3 = 11/4 16 11  - ÷ - 5 4 (NOTE: DO not cross-reduce here!) Find the reciprocal 16 4  64 - x - = - 5 11  55 = 1 9/55

6. Now you try one ... 2 3 1 - ÷ 3 - 3 4 4 - 9 Click For Answer

7. What about this one??? 1 5 - ÷ 6 2 11 - 12 Click For Answer

8. Independent Practice 1 1 5 - ÷ 2 - 3 4 10 2 - 27 Click For Answer

9. Review: What do you need to know in order to divide 
mixed numbers? 1. Change a mixed number to an improper fraction 2. Find the reciprocal of a fraction 3. Reduce (or cross-reducing) fractions 4. Multiply fractions 5. Simplify fractions

11. mixed --> improper keep, change, flip

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28. 05-10.ppt

29. 3 Problems to solve: 2 Things you learned. 1 Question you still have.

30. Attachments 05-10.ppt