Integers in Real Life
Budgets and Money Application
The positive numbers represent income
while the negative numbers represent
debt.
Money
Maggie owes the candy store $35.
Each of 5 friends will help her pay off
her debt. How much will each friend
pay?
Money
Lilly bought 4 pairs of blue jeans at $32
each. How much money did she pay the
clerk?
Budgeting your Money
You are a high school graduate who lives at home
and works at McDonald's making $5.50/hr. You work
40 hrs. a week and bring home about $165/wk and
$660/month after taxes. Your expenses are
rent:$150
car payment:$125
car insurance: $75
clothes:$105, food:$70
cell phone:$50
going-out (movies, etc.):$100
misc.(gas,etc.):$55.
Calculate your expenses and determine whether or not
you make enough to afford your life style.
Money
Solve the following problem using
integers. Jenny has $2. She earns $5,
spends $10, earns $4, then spends $3.
How many dollars does she have or
owe?
History Application
BC years are like negative numbers and
AD are like positive numbers.
History
The Punic Wars began in 264 B.C. and
ended in 146 B.C. How long did the
Punic Wars last?
History
Roman Civilization began in 509 B.C.
and ended in 476 A.D. How long did
Roman Civilization last?
The
Game
of
Golf
The game of golf is different in that the lower
the integer, the better the score. The integer
represents the number of strokes below par
for the golfer. For example, these are golfers
scores for a match.
Champions Tour Q-School
Name
Score
Peter Senior
-17
Joe Ozaki
-14
Steve Haskins
-14
Ronnie Black
-14
Jim Roy
-12
Golfing
The Minnesota State golf team has 4
golfers that each golfed a –6 rounds for
the day. What is the team score?
Football Application
The number of yards towards your goal
represents a positive integer and the
number of yards away from your goal
represents a negative integer.
Football
Five times in the same game,
Picksburg’s running back, "the Trolley,"
was stopped for a loss of 2 yards. How
many yards rushing did he have?
Temperature & Weather
Thermometers are really number lines
that stand upright. The numbers can be
thought of as temperature changes.
Positive numbers make the
temperature indicator rise. Negative
numbers make the temperature
indicator fall.
Weather Problem
In Buffalo, New York, the temperature
was -14°F in the morning. If the
temperature dropped 7°F, what is the
temperature now?
Weather
In the Sahara Desert one day it was
136°F. In the Gobi Desert a temperature
of -50°F was recorded. What is the
difference between these two
temperatures?
Temperature
Metal mercury at room temperature is a
liquid. Its melting point is -39°C. The
freezing point of nitrogen is -114°C.
How much warmer is the melting point
of mercury than the freezing point of
nitrogen?
Sea Level Application
The number of feet above sea level is a
positive number and the number of feet
below sea level is a negative number.
Sea Level
Mt. Everest, the highest elevation in
Asia, is 29,028 feet above sea level. The
Dead Sea, the lowest elevation, is 1,312
feet below sea level. What is the
difference between these two
elevations?
Sea Level
A submarine was situated 800 feet
below sea level. If it ascends 250 feet,
what is its new position?
Sea Level
A submarine was situated 450 feet
below sea level. If it descends 300 feet,
what is its new position?