1. Multiplying and Dividing Fractions Reporting Categories: Computation and Algebraic Relationships ELPS: Learning 1A TEKS 5.3JL, 5.1A

2. KWL What I Know K What I Want to Know W What I Learned L

3. Review: Multiplying Fraction

5. 7474 3232 21 8

6. Review: Multiplying Fraction

7. Dividing Fractions Just like multiplying but with a flip.

8. Dividing Fractions 5656 7474

9.  First thing is to rewrite the math problem into a multiplication problem.  By first, writing the first fraction. 5656

10. Dividing Fractions  Now we add the multiplication symbol. 5656

11. Dividing Fractions  This next part is a little tricky, we need to flip the second fraction.  This is called the reciprocal. 5656 4 7

12. Dividing Fractions  Now we can solve the original division problem in the form of a Multiplication problem by getting the reciprocal of the second fraction. 5656 4747 20 42

13. Lowest Terms for the Final Answer  Now we need to find the highest common divisor 5656 4747 20 42 1,2,4,5,10,20 1,2,3,6,7,14,21,42

14. Lowest Terms for the Final Answer  Now we need to find the highest common divisor 5656 4747 20 42 ÷2 10 21

15. Real World Examples: Would like to know how much half of a ¾ cake is. I have 2/3 of a tank of gas, how much can I use in the next 2 days.

16. Guided Practice  I have 2/3 of a tank of gas, how much can I use in the next 2 days. 2323 2121 2323 1212 2 6 1,2 1,2,3,6

17. Guided Practice  I have 2/3 of a tank of gas, how much can I use in the next 2 days. 2323 2121 2323 1212 2 6 ÷2 1 3

18. Individual Activity Worksheet Problem #1 3/4 ÷ 5/8= Problem #2 1/12 ÷ 1/4 = Problem #3 7/12 ÷ 2/3 =

19. KWL What I Know K What I Want to Know W What I Learned L

20. Things to Keep in Mind  Rewrite division problem into a multiplication problem.  Second fraction does a flip, reciprocal.  If need be, lowest terms.

21. Extended Activity