<< Chapter < Page Chapter >> Page >

The English words quotient and ratio are often used to describe fractions. Remember that “quotient” means division . The quotient of a and b is the result we get from dividing a by b , or a b .

Translate the English phrase into an algebraic expression: the quotient of the difference of m and n , and p .

Solution

We are looking for the quotient of the difference of m and n , and p . This means we want to divide the difference of m and n by p .

m n p
Got questions? Get instant answers now!
Got questions? Get instant answers now!

Translate the English phrase into an algebraic expression: the quotient of the difference of a and b , and cd .

a b c d

Got questions? Get instant answers now!

Translate the English phrase into an algebraic expression: the quotient of the sum of p and q , and r

p + q r

Got questions? Get instant answers now!

Key concepts

  • Equivalent Fractions Property: If a , b , c are numbers where b 0 , c 0 , then
    a b = a · c b · c and a · c b · c = a b .
  • Fraction Division: If a , b , c and d are numbers where b 0 , c 0 , and d 0 , then a b ÷ c d = a b · d c . To divide fractions, multiply the first fraction by the reciprocal of the second.
  • Fraction Multiplication: If a , b , c and d are numbers where b 0 , and d 0 , then a b · c d = a c b d . To multiply fractions, multiply the numerators and multiply the denominators.
  • Placement of Negative Sign in a Fraction: For any positive numbers a and b , a b = a b = a b .
  • Property of One: a a = 1 ; Any number, except zero, divided by itself is one.
  • Simplify a Fraction
    1. Rewrite the numerator and denominator to show the common factors. If needed, factor the numerator and denominator into prime numbers first.
    2. Simplify using the equivalent fractions property by dividing out common factors.
    3. Multiply any remaining factors.
  • Simplify an Expression with a Fraction Bar
    1. Simplify the expression in the numerator. Simplify the expression in the denominator.
    2. Simplify the fraction.

Practice makes perfect

Find Equivalent Fractions

In the following exercises, find three fractions equivalent to the given fraction. Show your work, using figures or algebra.

3 8

6 16 , 9 24 , 12 32 answers may vary

Got questions? Get instant answers now!

5 9

10 18 , 15 27 , 20 36 answers may vary

Got questions? Get instant answers now!

Simplify Fractions

In the following exercises, simplify.

Multiply Fractions

In the following exercises, multiply.

( 14 15 ) ( 9 20 )

21 50

Got questions? Get instant answers now!

( 63 84 ) ( 44 90 )

11 30

Got questions? Get instant answers now!

( 63 60 ) ( 40 88 )

Got questions? Get instant answers now!

Divide Fractions

In the following exercises, divide.

7 9 ÷ ( 7 4 )

1

Got questions? Get instant answers now!

5 18 ÷ ( 15 24 )

4 9

Got questions? Get instant answers now!

8 u 15 ÷ 12 v 25

10 u 9 v

Got questions? Get instant answers now!

3 4 ÷ ( −12 )

1 16

Got questions? Get instant answers now!

In the following exercises, simplify.

Simplify Expressions Written with a Fraction Bar

In the following exercises, simplify.

8 · 3 + 2 · 9 14 + 3

2 8 17

Got questions? Get instant answers now!

9 · 6 4 · 7 22 + 3

Got questions? Get instant answers now!

5 · 6 3 · 4 4 · 5 2 · 3

3 5

Got questions? Get instant answers now!

8 · 9 7 · 6 5 · 6 9 · 2

Got questions? Get instant answers now!

7 · 4 2 ( 8 5 ) 9 · 3 3 · 5

11 6

Got questions? Get instant answers now!

9 · 7 3 ( 12 8 ) 8 · 7 6 · 6

Got questions? Get instant answers now!

9 ( 8 2 ) 3 ( 15 7 ) 6 ( 7 1 ) 3 ( 17 9 )

5 2

Got questions? Get instant answers now!

8 ( 9 2 ) 4 ( 14 9 ) 7 ( 8 3 ) 3 ( 16 9 )

Got questions? Get instant answers now!

Translate Phrases to Expressions with Fractions

In the following exercises, translate each English phrase into an algebraic expression.

the quotient of r and the sum of s and 10

r s + 10

Got questions? Get instant answers now!

the quotient of A and the difference of 3 and B

Got questions? Get instant answers now!

the quotient of the difference of x and y , and 3

x y −8

Got questions? Get instant answers now!

the quotient of the sum of m and n , and 4 q

Got questions? Get instant answers now!

Everyday math

Baking. A recipe for chocolate chip cookies calls for 3 4 cup brown sugar. Imelda wants to double the recipe. How much brown sugar will Imelda need? Show your calculation. Measuring cups usually come in sets of 1 4 , 1 3 , 1 2 , and 1 cup. Draw a diagram to show two different ways that Imelda could measure the brown sugar needed to double the cookie recipe.

1 1 2 cups answers will vary

Got questions? Get instant answers now!

Baking. Nina is making 4 pans of fudge to serve after a music recital. For each pan, she needs 2 3 cup of condensed milk. How much condensed milk will Nina need? Show your calculation. Measuring cups usually come in sets of 1 4 , 1 3 , 1 2 , and 1 cup. Draw a diagram to show two different ways that Nina could measure the condensed milk needed for 4 pans of fudge.

Got questions? Get instant answers now!

Portions Don purchased a bulk package of candy that weighs 5 pounds. He wants to sell the candy in little bags that hold 1 4 pound. How many little bags of candy can he fill from the bulk package?

20 bags

Got questions? Get instant answers now!

Portions Kristen has 3 4 yards of ribbon that she wants to cut into 6 equal parts to make hair ribbons for her daughter’s 6 dolls. How long will each doll’s hair ribbon be?

Got questions? Get instant answers now!

Writing exercises

Rafael wanted to order half a medium pizza at a restaurant. The waiter told him that a medium pizza could be cut into 6 or 8 slices. Would he prefer 3 out of 6 slices or 4 out of 8 slices? Rafael replied that since he wasn’t very hungry, he would prefer 3 out of 6 slices. Explain what is wrong with Rafael’s reasoning.

Answers may vary

Got questions? Get instant answers now!

Give an example from everyday life that demonstrates how 1 2 · 2 3 is 1 3 .

Got questions? Get instant answers now!

Explain how you find the reciprocal of a fraction.

Answers may vary

Got questions? Get instant answers now!

Explain how you find the reciprocal of a negative number.

Got questions? Get instant answers now!

Self check

After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section.

A table is shown that is made up of four columns and seven rows. The first row reads “I can…” in the first column, “Confidently” in the second column, “With some help” in the third column and “No – I don’t get it” in the last column. The next row down in the first column reads “find equivalent fractions”, under this reads “simplify fractions”, under this reads “multiply fractions”, under this reads “divide fractions”, under this reads “Simplify expressions written with a fraction bar” and under this reads “translate phrases to expressions with fractions.”

After looking at the checklist, do you think you are well prepared for the next section? Why or why not?

Questions & Answers

What are the factors that affect demand for a commodity
Florence Reply
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply
Practice Key Terms 7

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Elementary algebra. OpenStax CNX. Jan 18, 2017 Download for free at http://cnx.org/content/col12116/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Elementary algebra' conversation and receive update notifications?

Ask