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Do Now

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Title: Do Now Author: Kimberly Muse-Holliday Last modified by: Kimberly Muse-Holliday Created Date: 6/28/2014 2:09:01 PM Document presentation format – PowerPoint PPT presentation

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Title: Do Now


1
Do Now
  1. Nancy earns 180 in 20 hours. What is her unit
    rate of her earnings?
  2. William can pack 60 toys in 4 hours. What is his
    unit rate with which he packs toys?
  3. There are 90 students in 3 classes. What is the
    unit rate of students per class?

2
Review
  • A ratio is the comparison of two numbers or
    measures that have the same unit.
  • Ratio of girls to boys in a class 16 girls to 15
    boys
  • Ratio of wins to losses for Pelicans 34 wins to
    48 losses

3
Review
  • A Rate is a ratio between two quantities of
    different units.
  • 110 miles in 2 hours
  • Travel 240 miles on 15 gallons of gas

4
Review
  • Unit rate is the ratio of two measurements in
    which the denominator is 1.
  • When two ratios are equal, it is called a
    proportion.
  • You solve for a unit rate by setting up a
    proportion in which the denominator is 1 and
    solving for the unknown.
  • 110 miles in 2 hours How many miles traveled in
    1 hour?
  • 110 miles / 2 hours T miles / 1 hour
  • Solve for the unknown T Miles traveled in 1
    hour
  • Cross multiple
  • 110 X 1 T X 2
  • 110 2T
  • 110 / 2 2T / 2
  • 55 T
  • 55 miles traveled in 1 hour

5
Lesson
  • Objective Compute unit rate of fractions for
    ratios of lengths, areas, time, and other
    quantities measured in like and different units
    with 80 or greater accuracy.
  • How does the objective relate to our review of
    ratio, rate, and unit rate?

6
Lesson
  • Compute unit rate of fractions
  • Step 1 Identify the two items.
  • Step 2 Set up a proportion where your
    identified two items equals and unknown in the
    numerator and a 1 in the denominator.
  • Step 3 Solve for the unknown.
  • Step 4 Write out answer in simplest form using
    the correct units.
  • Sophia used 1/3 of an ounce of cheese to make
    1/12 of a pound of pizza dough. How many ounces
    of cheese are needed to make a pound of pizza
    dough?

7
Guided Practice
  • 1) Jackson eats 1/4 part of a banana in 1/2
    minute. How much time he will need to eat full
    banana?

8
Guided Practice
  • 2) Mike ran 1/2 mile in each 1/7 of an hour
    compute the unit rate (miles per hour) as the
    complex fraction.

9
Guided Practice
  • 3) Mary made 1/5 of a batch of cookies in 1/10 of
    an hour. How many batches of cookies can she make
    in one hour?

10
Independent Practice
  • You will have no more than 30 minutes to work on
    your independent practice.
  • Independent practice work is to be done quietly
    or with 6 in voice if you need to work with a
    partner.
  • We will review answers as you are working the
    problems.

11
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12
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13
Lesson Review
  • A ratio is the comparison of two numbers or
    measures that have the same unit.
  • A Rate is a ratio between two quantities of
    different units.
  • Unit rate is the ratio of two measurements in
    which the denominator is 1.
  • When two ratios are equal, it is called a
    proportion.
  • You solve for a unit rate by setting up a
    proportion in which the denominator is 1 and
    solving for the unknown.

14
Exit Ticket
  • Addison plays 1/2 of a song in 1/8 of a minute.
    How many minutes will he need to play a full
    song?
  • Joey fills 1/5 of a toffee box in 1/25 of
    a minute. How much time will he take to fill a
    toffee box?
  • Claire power walks 1/9 of a mile in 1/54 of an
    hour. Compute the unit rate as the complex
    fraction.
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