Compare and Predict Rates and Ratios

Presentation

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Mathematics

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6th Grade

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Practice Problem

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Medium

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CCSS

6.RP.A.3A, 6.RP.A.1, 6.RP.A.2

Standards-aligned

Kellyn Morning

Used 15+ times

FREE Resource

5 Slides • 3 Questions

Compare and Predict Rates and Ratios

Mrs. Cantu

How are rates and ratios similar and different?

Ratios - a comparison of two quantities describing the same attribute
Example: There are 8 boys and 9 girls in the classroom. The ratio is 8 to 9
Rate - comparison of two quantities having different attributes
rates are a special kind of ratio
example: Your heart beats 80 beats per minute, you drive 15 miles/hour
Unit Rate - has a denominator of 1 when written as a fraction

Multiple Choice

Thinking of equivalent ratios, 1 : 4 is equal to:

2 : 9

4 : 16

6 : 26

8 : 40

Multiple Choice

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

$8 per pound

$5 per pound

$35 per pound

0.125 pounds per dollar

Example 1

STAAR Question - window washer cleaned 38 windows in 2 hours. At this rate, how many windows did he clean in 7 hours?

Example 2

STAAR Question - In Dallas, Texas, 8 bats ate 40 grams of insects in one night. At this rate, how many grams of insects could 64 bats eat in one night?

Multiple Choice

STAAR Question – The ratio of boys to girls in a choir is 5 to 4. There are 52 girls in the choir. How many boys are there?

65 boys

60 boys

75 boys

50 boys

Google Classroom

Open the assignment labeled Warm Up and Practice under January 6, 2021

Compare and Predict Rates and Ratios

Mrs. Cantu

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