Unit 1, Lesson 3 Ms. Rodriguez Dividing Fractions by Fractions

DO NOW (5 Minutes) Sheldon can read 15 comics in 5 hours. Raj can read 28 comic books in 8 hours. Who is able to read the most comic books?

FOCUS QUESTION: How can we divide a fraction by another fraction?

EXAMPLE #1 Diana is painting statues. She has 7/8 of a gallon of paint remaining. Each statue requires 1/16 of a gallon of paint. How many statues can she paint? Diana can paint

EXAMPLE #2 A piano teacher has 4 ½ hours available to teach each night. Each lesson will last 1 ½ hours. How many lesson can the teacher schedule in a night? Number of lessons = time available divided by time spent 3 lessons.

Dear future mathematicians, You have been working independently on dividing a fraction by a whole, dividing a whole by a fraction and dividing a fraction by a fraction. Your task is to use your skills to help your group find the solutions to the posted scenarios within 15 minutes. P.S. I hope you didn’t forget what we studied about percent! Your Teacher, Ms. Rodriguez

GROUP WORK There are four scenarios. Your group must submit their work. This will be graded! Each person within your group should attempt a scenario. When time is called be prepared to post your answers on the board for discussion

Scenario One Snoopy is building a brick dog house. He is stacking bricks that are each 2/3 feet tall. The finished dog house will be 4 2/3 feet tall. How many bricks will Snoopy need? Scenario Two Asher eats ¾ of a cup of dog food each day. How many full days will a bag with 4 cups last?

Scenario Three Lucky the leprechaun is preparing the Lucky Charms cereal. He has 80 marshmallows and needs to use 30% of the marshmallows for a box of cereal. How many marshmallows does he use? Scenario Four Sonia’s mom gave her 7/8 of a bag of candy hearts. Sonia will split the bag with among four friends. How much of the bag will each friend get? Use a math question to support your answer.

EXIT TICKET Alizah bought 6/8 kg of chicken meat. She is going to put the meat in bags that each hold 2/7 kg. How many bags will Alizah need? 3 bags