Transcript Dazzling Decimals

Dividing Fractions
March 24, 2011
Fractions
• Agenda
– Steps to Dividing Fractions
– Practice Dividing Fractions
– Writing Word Problems
An Easy Way To Remember
Dividing Fraction is Easy as
Pie.
Flip Flop the Second Fraction
Then Multiply!
You have 3 minutes to copy.
Dividing Fractions
⅓ ÷⅙
Step 1: Change the second fraction to its reciprocal which means
to flip flop the second fraction.
1 ÷ 1
3
6
1 ÷ 6
3
1
Step 2: Multiply the with the reciprocal. 1
3
X 6 = 6
1
3
Step 3: Simplify the fraction or reduce to the lowest terms if needed.
(Remember to divide by the GCF 6 ÷ 3 = 2 or 2
3÷ 3
1
Let’s Go!
Warm-Up
• Using Your Notes complete the following
fractions. Please show your step-by-step work.
5/8 X 2/5 =
¾X3=
Describe how you would solve multiplication
problems using your calculator?
Warm-UpDid You Get it Right?
• Using Your Notes complete the following
fractions. Please show your step-by-step work.
5/8 X 2/5 = 1/4
¾X3= 2¼
Describe how you would solve multiplication
problems using your calculator?
Let’s Go!
✔For Understanding
3/8 ÷ 4/5 =
3/7 ÷ 3/5=
3 ⅙ ÷ 1¼ =
An Italian sausage is 8 inches long. How many
pieces of sausage can be cut from the 8-inch
piece of sausage if each piece is to be twothirds of an inch
✔For Understanding
3/8 ÷ 4/5 = 15/32
3/7 ÷ 3/5= 5/7
3 ⅙ ÷ 1¼ = 2 8/15
An Italian sausage is 8 inches long. How many pieces
of sausage can be cut from the 8-inch piece of
sausage if each piece is to be two-thirds of an inch
So, divide 8 by 2/38 ÷ 2/3 = 8/1 ÷ 2/3 = 8/1 × 3/2
= 24/2 = 12
✔For Understanding
Take 15 minutes to develop two word
problems using fractions. Once you complete
the words problems, your teacher will ask you
to share it with your class. Make sure you can
solve your own word problems. Use your key
words chart to find helpful words for division.