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:$150car payment:$125car insurance: $75clothes:$105, food:$70cell phone:$50going-out (movies, etc.):$100misc.(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 GolfThe 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?