Keep Change Flip One method for dividing fractions

Keep, Change, Flip � One method for dividing fractions is Keep, Change, Flip. � Keep the 1 st Fraction the Same � Change the Sign from Division to Multiplication � Flip the 2 nd Fraction � Here’s a video to explain it a little bit more! http: //ed. ted. com/on/VSmn. UQ 3 W

Guided Practice � Now that we know the Keep, Change, Flip method, let’s apply it, together on the problem below. � 2/3 ÷ 5

Guided Practice � Now that we know the Keep, Change, Flip method, let’s apply it, together on the problem below. � 2/3 ÷ 5 = 2/15

Independent Practice � Now, you try the KCF method on the following problems: � 5/6 ÷ 7 � 1/3 ÷ 4 � 3÷¼ � 8 ÷ 4/7

Independent Practice � Now, you try the KCF method on the following problems: � 5/6 ÷ 7= 5/42 � 1/3 ÷ 4= 1/12 � 3 ÷ ¼= 12 � 8 ÷ 4/7= 14

Guided Practice � Let’s work the following division word problem together using KCF. � Walker collected ½ a pound of strawberries. He needs to divide them evenly among 5 wooden baskets. How many pounds of strawberries did Walker put in each basket?

Guided Practice � Let’s work the following division word problem together using KCF. � Walker collected ½ a pound of strawberries. He needs to divide them evenly among 5 wooden baskets. How many pounds of strawberries did Walker put in each basket? 1/10 of a pound

Independent Practice Your turn! � Kate uses 2 packets of milk powder per day to feed her little baby. How many days will 1/3 of a packet of milk powder last?

Independent Practice Your turn! � Kate uses 2 packets of milk powder per day to feed her little baby. How many days will 1/3 of a packet of milk powder last? 1/6 of a day

Independent Practice And another… On the last day of exams, our teacher had ½ bundle of blank paper left. She gave the paper to her 3 students equally. How much of the bundle did every student take home?

Independent Practice And another… On the last day of exams, our teacher had ½ bundle of blank paper left. She gave the paper to her 3 students equally. How much of the bundle did every student take home? 1/6 of the bundle

Red Light, Green Light � Time to work with your team! The Ferndale High School Golden Eagles have a large playfield at their school that covers 2/3 of a square mile. One side of the playfield is ½ mile in width. A. Draw a diagram that shows the situation & include labels. B. What operation can you do to find the length of the field? Write a number sentence for the operation. C. Find the length of the playing field.

Red Light, Green Light � Time to work with your team! The Ferndale High School Golden Eagles have a large playfield at their school that covers 2/3 of a square mile. One side of the playfield is ½ mile in width. L=X 2/3 ÷ ½ = 1&1/3 = L W= 1/2

Red Light, Green Light For the problem below, work with your team to: A. Write a question in words that could be answered using the expression. B. Draw a diagram that represents the problem and your question. C. Find the quotient and explain what it means. ¾÷½

Red Light, Green Light For the problem below, work with your team to: A. If Sally has ¾ of a candy bar and wants to share ½ of the candy bar with Jan, how much candy bar would each girl get? B. Find the quotient and explain what it means. ¾ ÷ ½ = 1 & ½ So, each girl would get 1 & ½ of the candy bar.

Now, let’s play “Showdown”. Simplify & make fractions into a mixed number, when possible. ¼÷½

Now, let’s play “Showdown”. ¼ ÷ ½ = 1/2

#2 4/5 ÷ 7/8

#2 4/5 ÷ 7/8= 32/35

#3 2/3 ÷ 1/3

#3 2/3 ÷ 1/3= 2

#4 1/3 ÷ 2/3

#4 1/3 ÷ 2/3= 1/2

#5 8/9 ÷ 1/2

#5 8/9 ÷ 1/2 = 1 & 7/9

#7 4/9 ÷ 1/3

#7 4/9 ÷ 1/3= 1 & 1/3