<< Chapter < Page Chapter >> Page >

Practice makes perfect

Use Multiplication Notation

In the following exercises, translate from math notation to words.

4 × 7

four times seven; the product of four and seven

Got questions? Get instant answers now!

5 · 12

five times twelve; the product of five and twelve

Got questions? Get instant answers now!

( 10 ) ( 25 )

ten times twenty-five; the product of ten and twenty-five

Got questions? Get instant answers now!

42 ( 33 )

forty-two times thirty-three; the product of forty-two and thirty-three

Got questions? Get instant answers now!

Model Multiplication of Whole Numbers

In the following exercises, model the multiplication.

Multiply Whole Numbers

In the following exercises, fill in the missing values in each chart.

In the following exercises, multiply.

  1. 7 · 6
  2. 6 · 7
  1. 42
  2. 42
Got questions? Get instant answers now!

50 × 1,000,000

50,000,000

Got questions? Get instant answers now!

Translate Word Phrases to Math Notation

In the following exercises, translate and simplify.

the product of 18 and 33

18 · 33; 594

Got questions? Get instant answers now!

the product of 15 and 22

Got questions? Get instant answers now!

fifty-one times sixty-seven

51(67); 3,417

Got questions? Get instant answers now!

forty-eight times seventy-one

Got questions? Get instant answers now!

ten times three hundred seventy-five

10(375); 3,750

Got questions? Get instant answers now!

ten times two hundred fifty-five

Got questions? Get instant answers now!

Mixed Practice

In the following exercises, simplify.

In the following exercises, translate and simplify.

the difference of 50 and 18

50 − 18; 32

Got questions? Get instant answers now!

the difference of 90 and 66

Got questions? Get instant answers now!

20 more than 980

20 + 980; 1,000

Got questions? Get instant answers now!

the product of 12 and 875

12(875); 10,500

Got questions? Get instant answers now!

the product of 15 and 905

Got questions? Get instant answers now!

subtract 74 from 89

89 − 74; 15

Got questions? Get instant answers now!

the sum of 3,075 and 95

3,075 + 950; 4,025

Got questions? Get instant answers now!

the sum of 6,308 and 724

Got questions? Get instant answers now!

366 less than 814

814 − 366; 448

Got questions? Get instant answers now!

Multiply Whole Numbers in Applications

In the following exercises, solve.

Party supplies Tim brought 9 six-packs of soda to a club party. How many cans of soda did Tim bring?

Tim brought 54 cans of soda to the party.

Got questions? Get instant answers now!

Sewing Kanisha is making a quilt. She bought 6 cards of buttons. Each card had four buttons on it. How many buttons did Kanisha buy?

Got questions? Get instant answers now!

Field trip Seven school busses let off their students in front of a museum in Washington, DC. Each school bus had 44 students. How many students were there?

There were 308 students.

Got questions? Get instant answers now!

Gardening Kathryn bought 8 flats of impatiens for her flower bed. Each flat has 24 flowers. How many flowers did Kathryn buy?

Got questions? Get instant answers now!

Charity Rey donated 15 twelve-packs of t-shirts to a homeless shelter. How many t-shirts did he donate?

Rey donated 180 t-shirts.

Got questions? Get instant answers now!

School There are 28 classrooms at Anna C. Scott elementary school. Each classroom has 26 student desks. What is the total number of student desks?

Got questions? Get instant answers now!

Recipe Stephanie is making punch for a party. The recipe calls for twice as much fruit juice as club soda. If she uses 10 cups of club soda, how much fruit juice should she use?

Stephanie should use 20 cups of fruit juice.

Got questions? Get instant answers now!

Gardening Hiroko is putting in a vegetable garden. He wants to have twice as many lettuce plants as tomato plants. If he buys 12 tomato plants, how many lettuce plants should he get?

Got questions? Get instant answers now!

Government The United States Senate has twice as many senators as there are states in the United States. There are 50 states. How many senators are there in the United States Senate?

There are 100 senators in the U.S. senate.

Got questions? Get instant answers now!

Recipe Andrea is making potato salad for a buffet luncheon. The recipe says the number of servings of potato salad will be twice the number of pounds of potatoes. If she buys 30 pounds of potatoes, how many servings of potato salad will there be?

Got questions? Get instant answers now!

Painting Jane is painting one wall of her living room. The wall is rectangular, 13 feet wide by 9 feet high. What is the area of the wall?

The area of the wall is 117 square feet.

Got questions? Get instant answers now!

Home décor Shawnte bought a rug for the hall of her apartment. The rug is 3 feet wide by 18 feet long. What is the area of the rug?

Got questions? Get instant answers now!

Room size The meeting room in a senior center is rectangular, with length 42 feet and width 34 feet. What is the area of the meeting room?

The area of the room is 1,428 square feet.

Got questions? Get instant answers now!

Gardening June has a vegetable garden in her yard. The garden is rectangular, with length 23 feet and width 28 feet. What is the area of the garden?

Got questions? Get instant answers now!

NCAA basketball According to NCAA regulations, the dimensions of a rectangular basketball court must be 94 feet by 50 feet. What is the area of the basketball court?

The area of the court is 4,700 square feet.

Got questions? Get instant answers now!

NCAA football According to NCAA regulations, the dimensions of a rectangular football field must be 360 feet by 160 feet. What is the area of the football field?

Got questions? Get instant answers now!

Everyday math

Stock market Javier owns 300 shares of stock in one company. On Tuesday, the stock price rose $ 12 per share. How much money did Javier’s portfolio gain?


Javier’s portfolio gained $3,600.

Got questions? Get instant answers now!

Salary Carlton got a $ 200 raise in each paycheck. He gets paid 24 times a year. How much higher is his new annual salary?

Got questions? Get instant answers now!

Writing exercises

How confident do you feel about your knowledge of the multiplication facts? If you are not fully confident, what will you do to improve your skills?

Answers will vary.

Got questions? Get instant answers now!

How have you used models to help you learn the multiplication facts?

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.

.

On a scale of 1–10, how would you rate your mastery of this section in light of your responses on the checklist? How can you improve this?

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place.
Kimberly Reply
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
August Reply
What is the expressiin for seven less than four times the number of nickels
Leonardo Reply
How do i figure this problem out.
how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
Practice Key Terms 1

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Prealgebra. OpenStax CNX. Jul 15, 2016 Download for free at http://legacy.cnx.org/content/col11756/1.9
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

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

Ask