Examplesof Rates
r. Lookforexamples
of ratesin newspapers,
in magazines,
and on labels.
Studythe two examplesbelow,and then listsomeof the examplesyou find.
lf possible,bringyoursamplesto class.
Labe
Exampfe:
n a can of corn
S e r v i n gS i z e 1 1 0 g
ServinosPer Container3 1/2
"Servin s Per Contatner3+"
acka
fLlbu
The
doesnlts
so.but here are a.
+ bulbs in each packaqe.
Li
txample:
Example:
Example:
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Example:
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A
1
_L_9_
2 . ; - ; :
c
8
c
1
9
: - - 1 _ -
8
9
4
5 .* * 3 :
339
Name
Solvethe problems.
r. HotelsR Us charges$45 per nightfor a singleroom.
At that rate,how muchdoesa singleroomcostper week?
The Moralesfamilyspendsabout$84 eachweekfor
food.On average,how muchdo they spendper day?
$
playingthe pianothe sameamount
Sharonpractices
of timeeachday.She practiceda totalof 4 hours
on Mondayand Tuesdaycombined.At that rate,
how manyhourswouldshe practicein a week?
hours
Hours
Days
1
2
3
4
5
6
7
4. Peoplein the UnitedStatesspendan averageof 6 hoursand4 minutes
eachweekreadingnewspapers.
a. That'show manyminutesper week?
minutesper week
b. At that rate,how muchtimedoesan average
personspendreadingnewspapers
in a 3-dayperiod?
minutes
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3
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Minutes
o
f
o
Days
1
2
3
4
5
6
7
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C)
:24 * 379
7 . 6 5 2- 8 :
6. 870* 63:
s. 546+ 42:
341
Name
Mammal Rates
l.
A molecandig a tunnel300feetlongin one night.
Howfar coulda moledig in one week?
About
feet
An elephantmay eat 500 poundsof hay and drink
60 gallonsof waterin one day.
a. Abouthowmanypoundsof haycouldan
elephanteat per week?
About
pounds
b. Abouthow manygallonsof watercouldan
elephantdrinkperweek?
About
gallons
The bottle-nosed
whalecan diveto a depth
of 3,000feet in 2 minutes.Abouthow many
feet is that per second?
About
feet per second
+. A goodmilkingcowwillgiveup to 1,500gallonsof milkin a year.
Abouthowmanygallonsis thatin 3 months?
Abouthow manyquartsis that in 3 months?
About
About
gallons
quarts
s. Slothsspendup to 80 percentof theirlivessleeping.
Notonlyis a slothextremely
sleepy,but it is alsovery slow.A slothtravelson the groundat a speedof about
7 feetper minute.In the trees,its speedis about15 feetper minute.
a. Afterone hour,how muchfarlherwoulda slothhave
traveledin the treesthanon the ground(if it didn't
stopto sleep)?
b. About how long would it take a slothto travel 1 mile
on the ground?(Hint:There are 5,280 feet in a mile.)
!
@
J
@
About
feet
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About
minutes,
6)
D
or
6.59*27:
8. 904- 5:
342
648 * 85
9.
536/8
hours
€
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Name
Unit Prices
Solvethe unitpriceproblems
below.Complete
thetablesif it is helpfultodo so.
Dollars
Ounces
A
>€
r. A 12-ozbagof pretzels
costs96 cents.The unitpriceis
per ounce.
0.96
3
1
I
12
A packageof 3 rollsof papertowelscosts$2.07.The unitpriceis
per roll.
Dollars
Rolls
2.07
2
1
3
a. A 4-literbottleof watercosts$1.40.The unitpriceis
Dollars
Liters
per liter.
1.40
2
1
3
4
Choose4 itemsfromnewspaper
ads.In thetablebelow,recordthe name,
price,and quantityof eachitem.Leavethe UnitPricecolumnblank.
Item
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Quantity
Price
Unit Price
Golden Strn
2L/ ounces $2eq
Raisins
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3
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Namethe factorpairsfor eachnumber.
s. 12
6, 50
345
Name
Unit Pricing
t . A packageof 3 muffinscosts$1:89.
What is the priceper muffin?
A S-poundbag of ricecosts$1.85.
What is the priceper pound?
Chewywormsare soldat $2.40per pound.
What is the priceper ounce?
A 6-packof bagelscosts$2.t t .
What iSthe priceper bagel?
A 2-poundbag of frozencorncosts$2.03.
What is the priceper pound?
A storesellsyogurtin two sizes:The 8-ouncecup costs72 cents,and the
6-ouncecup costs60 cents.Whichis the betterbuy?Explainyouranswer.
7. Makeup yourown "betterbuy"problem.Thensolveit.
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Nameall the factors.
8. 42
e.23
347
Name
Country Statistics
r. Chinahasthe longestborderin the world-13,759miles.
Russiahasthe secondlongestborderin the world-12,514miles.
Howmuchshorteris Russia'sborderthanChina'sborder?
miles
The areaof Russiais about1,818,629
squaremiles.The areaof
Spain,includingoffshoreislands,is about194,897squaremiles.
Abouthowmanytimeslargeris RussiathanSpain?
-
timeslarger
Studentsin Chinaattendschoolabout251 daysper year
Studentsin the UnitedStatesattendschoolabout180days
per year.
Aboutwhatpercentof the yeardo Chinesestudents
spendin school?
o/
/o
Aboutwhatpercentof the yeardo Americanstudents
spendin school?
/o
Englishis officially
spokenin 54 countries.
Portuguese
is
officiallyspokenin 8 countries.Portuguese
is spokenin about
whatfractionof the numberof English-speaking
countries?
The tableto the rightshows
the countriesin the worldwith
the mostneighboring
countries.
Country
Number of Neighbors
Brazil
10
China
15
Dem.Rep.of Congo
Germany
Russia
Sudan
I
9
14
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f,
Usethe datain the tableto answerthe following
questions.
a. Whichcountryhasthe maximumnumberof neighbors?
b. Whatis the range?
c. What is the mode?
d. What is the median?
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