Integers in Real - Life

1
Integers in Real - Life
2
Budgets and Money Application

• The positive numbers represent income while the
  negative numbers represent debt.

3
Money

• Maggie owes the candy store 35. Each of 5
  friends will help her pay off her debt. How much
  will each friend pay?

4
Money

• Lilly bought 4 pairs of blue jeans at 32 each.
  How much money did she pay the clerk?

5
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
• rent150
• car payment125
• car insurance 75
• clothes105, food70
• cell phone50
• 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.

6
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?

7
History Application

• BC years are like negative numbers and AD are
  like positive numbers.

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History

• The Punic Wars began in 264 B.C. and ended in
  146 B.C. How long did the Punic Wars last?

9
History

• Roman Civilization began in 509 B.C. and ended
  in 476 A.D. How long did Roman Civilization last?
  

10
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 Champions Tour Q-School
Name Score
Peter Senior -17
Joe Ozaki -14
Steve Haskins -14
Ronnie Black -14
Jim Roy -12
11
Golfing

• The Minnesota State golf team has 4 golfers that
  each golfed a 6 rounds for the day. What is the
  team score?

12
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.

13
Football

• Five times in the same game, Picksburgs running
  back, "the Trolley," was stopped for a loss of 2
  yards. How many yards rushing did he have?

14
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.

15
Weather Problem

• In Buffalo, New York, the temperature was -14F
  in the morning. If the temperature dropped 7F,
  what is the temperature now?

16
Weather

• In the Sahara Desert one day it was 136F. In
  the Gobi Desert a temperature of -50F was
  recorded. What is the difference between these
  two temperatures?

17
Temperature

• Metal mercury at room temperature is a liquid.
  Its melting point is -39C. The freezing point of
  nitrogen is -114C. How much warmer is the
  melting point of mercury than the freezing point
  of nitrogen?

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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.

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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?

20
Sea Level

• A submarine was situated 800 feet below sea
  level. If it ascends 250 feet, what is its new
  position?

21
Sea Level

• A submarine was situated 450 feet below sea
  level. If it descends 300 feet, what is its new
  position?