Complex Fractions and Unit Rates_abg欧博官网|登陆|游戏|

Course 2, Lesson 1-2
ANSWERS
1. $0.25 per ounce
2. 52.14 miles per hour
3. $1.87 per goldfish
4. 78 Calories per serving
5. $2.49 for a 4-ounce bottle
6. 53:1

HOW can you show that
two objects are proportional?
Ratios and Proportional Relationships
Course 2, Lesson 1-2

$Ratios and Proportional Relationships Course 2, Lesson 1-2 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. • 7.RP.1 Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. • 7.NS.3 Solve real-world and mathematical problems involving the four operations with rational numbers. Mathematical Practices 1 Make sense of problems and persevere in solving them. 3 Construct viable arguments and critique the reasoning of others. 4 Model with mathematics. 6 Attend to precision.$

$• To simplify a complex fraction • To find unit rates Ratios and Proportional Relationships Course 2, Lesson 1-2$

$Ratios and Proportional Relationships Course 2, Lesson 1-2 • complex fraction 1 2 2 1 2 3 11 2 1 4$

$1 Need Another Example? 2 Write the complex fraction as a division problem. Multiply by the reciprocal of 2, which is .3 4 Simplify. 5 Step-by-Step Example 1. Simplify . Recall that a fraction can also be written as a division problem. So, is equal to .$

Answer
Need Another Example?

$1 Need Another Example? 2 Write the complex fraction as a division problem. Multiply by the reciprocal of , which is .3 4 Simplify. 5 Step-by-Step Example 2. Write the fraction as a division problem. So, is equal to 2.$

Answer
Need Another Example?
20

$1 Need Another Example? 2 Write the complex fraction as a division problem. Write the mixed number as an improper fraction.3 4 Multiply by the reciprocal of , which is . Simplify.5 6 Step-by-Step Example 3. Josiah can jog 1 miles in hour. Find his average speed in miles per hour. Write a rate that compares the number of miles to hours. So, Josiah jogs at an average speed of 5 miles per hour.$

Answer
Need Another Example?
Marcus has a bag of cat food that contains
22 cups. If he feeds his cats a total of
cup of food per day, how many days will the bag
last?
30 days

$1 Need Another Example? 2 Write the complex fraction as a division problem. Write the mixed number as an improper fraction.3 4 Multiply by the reciprocal of , which is . Simplify.5 6 Step-by-Step Example 4. Tia is painting her house. She paints 34 square feet in hour. At this rate, how many square feet can she paint each hour? Write a ratio that compares the amount of square feet to hours. So, Tia can paint 46 square feet per hour.$

Answer
Need Another Example?
A construction worker is blacktopping a
driveway. She blacktops 35 square yards
in hour. How many square yards can she
blacktop per hour?
42 square yards per hour

$Definition of percent1 Need Another Example? 2 Write the complex fraction as a division problem. Write 33 as an improper fraction. 3 4 Multiply by the reciprocal of 100, which is . Simplify.5 6 Step-by-Step Example 5. On Javier's soccer team, about 33 % of the players have scored a goal. Write 33 % as a fraction in simplest form. 1 1 So, about of Javier's team has scored a goal.$

$Answer Need Another Example? Write 6 % as a fraction in simplest form.$

How did what you learned
today help you answer the
HOW can you show that
two objects are proportional?
Course 2, Lesson 1-2
Ratios and Proportional Relationships

$How did what you learned today help you answer the HOW can you show that two objects are proportional? Course 2, Lesson 1-2 Ratios and Proportional Relationships Sample answers: • By simplifying a complex fraction to find a unit rate • By writing a percent as a rate per 100$

Simplify .
Ratios and Proportional RelationshipsRatios and Proportional Relationships
8
31
5
Course 2, Lesson 1-2

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