Problem Solving With Integers

A submarine at 21 feet below sea level moves up about 6 feet. 21 feet below sea level can be represented by - 21We can use the sign Moves up about 6 feet can be represented by 6We get -21 6 and -21 6 = -15The submarine is 15 feet below sea level.

Problem #3: A football team gained 6 yards and then lost 10 yards. Solution The problem has 3 important components shown in bold below.

Integers are whole numbers and zero; they may be positive or negative numbers.

Examples of integers include -3, -2, -1, 0, 1, 2, 3, and so on, in both directions.

Let's look at an example of a word problem involving integers: The weather in Far-away-land has been crazy.

On Monday, the temperature was a hot 99 degrees Fahrenheit. Wednesday had a comfortable temperature of 87 degrees.

It is also helpful to read the problem well and look for what you are being asked to do or to find.

Some problems may ask you to find the sum which means you will add; others may ask you to find the difference, meaning you will subtract. We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities.

After reading the problem it is a good idea to look at the question.

You must identify what you are being asked to do or find. The problem tells us to add the temperatures from the week. If we were to write the numbers in a math equation, it would look like this: 99 0 87 (-30) (-12) = To solve this problem, we would need to add those numbers together.


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