Lesson
Ratios, Rates, and Unit Rate
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andrea_nale_61790
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  • Slide 1
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    Ratios, Rates, and Unit Rate

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  • Slide 2
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    Ratio

    A comparison of two numbers using division


    You can write a ratio in 3 different forms: fraction, colon, the word "to"


    You can use a ratio to compare information in three different settings: a part-to-part comparison, a part-to-whole comparison, or a whole-to-part comparison

  • Question 3
    60 seconds
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    Q.

    What are the 3 ways you can write a ratio?

    answer choices

    fraction

    colon

    the word "to"

    part-to-part

  • Question 4
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    Q.

    7 girls to 5 boys

    answer choices

    part-to-part

    part-to-whole

    whole-to-part

  • Question 5
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    Q.

    7 girls to all the students in the class

    answer choices

    part-to-part

    part-to-whole

    whole-to-part

  • Question 6
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    Q.

    all the students in the class to 5 boys

    answer choices

    whole-to-part

    part-to-part

    part-to-whole

  • Slide 7
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    Equivalent Ratios

    • equivalent ratios work like fractions, whatever you do to the top (numerator), you have to do to the bottom (denominator

  • Question 8
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    Q.

    1:2 is equivalent to 2:4

    answer choices

    yes, the top and bottom were both multiplied by 2

    no

  • Question 9
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    Q.

    4:7 is equivalent to 8:_

    answer choices

    7

    32

    14

  • Question 10
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    Q.

    8:9 is equivalent to 24: ____

    answer choices

    36

    27

    16

  • Question 11
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    Q.

    8:5 is equivalent to 16:_

    answer choices

    8

    16

    10

  • Question 12
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    30 seconds
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    Q.

    I understand how to find an equivalent ratio.

    no correct answer

    yes

    no

  • Slide 13
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    Rate

    • A rate is a comparison of two measurements with different units of measure and is considered to be a special kind of ratio. For example, 12 golf balls for $6 can be written as 12:6. This RATE compares golf balls to their price.

  • Question 14
    Ungraded
    180 seconds
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    Q.

    What is the difference between a ratio and a rate?

  • Question 15
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    Q.

    Write this rate in simplest form : 12:144

    answer choices

    6:72

    3:36

    1:12

  • Question 16
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    Q.

    Write this ratio in simplest form: 72:9

    answer choices

    8:1

    24:3

    1:8

  • Slide 17
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    Unit Rate

    • A rate with a denominator of 1.

    • When finding the unit rate, simplify the ratio.

    • You could also divide.

    • Basically think... "How much is just 1?"

  • Question 18
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    Q.

    Find the unit rate: 10 miles in 5 hours

    answer choices

    2 miles in 1 hour

    1 mile in 2 hours

  • Question 19
    120 seconds
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    Q.

    Find the unit rate. 8 apples for $3.

    answer choices

    You can't do that, it doesn't divide out evenly

    0.375

    0.38

    2.6666......

    2.67

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