And to get from zero to 12, we need to add 12. To get from negative 10 to zero, we need to add 10. Let’s consider the number line that goes from negative 10 to 12. This means that the range of temperatures that Amelia recorded is 22 degrees Fahrenheit.Īn alternative method to solve this question would be to use a number line. Subtracting negative 10 from a number is the same as adding 10 to that number. We can, therefore, calculate the range by subtracting negative 10 from 12. The lowest or coldest temperature is negative 10 degrees Fahrenheit. The highest or warmest temperature is 12 degrees Fahrenheit, as 12 is the highest integer in the list. In this question, we firstly need to find the highest and lowest temperature. The range of any data set is calculated by subtracting the lowest value from the highest value. Seven, one, negative 10, 12, and negative six degrees Fahrenheit. Determine the range of the recorded data. 1.Amelia recorded the outside temperature for five nights for a school project. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. Click once in an ANSWER BOX and type in your answer then click ENTER. If you skip steps, or do the work in your head, you are very likely to make a mistake-even if you are a top math student!ĭirections: Read each question below. When subtracting integers, it is important to show all work, as we did in this lesson. Summary: To subtract an integer, add its opposite. You may extend the number line below to help you salve these problems. 9 + +4 = -5 is read as Negative 9 plus positive 4 equals negative 5.Įxample 3: Find the difference between each pair of integers.Įxample 4: Find the difference between each pair of integers. Also, do not confuse the sign of the integer with the operation being performed. Notice that in each problem above, the first integer remained unchanged. If you have a positive and a negative, there is one dash left over, and the answer is negative. Let's look at some simpler examples of subtracting integers.Įxample 2: Find the difference between each pair of integers. What does a negative plus a positive equal The signs add together physically. In the above problem, we added the opposite of the second integer and subtraction was transformed into addition. Rule: To subtract an integer, add its opposite. We need a rule for subtracting integers in order to solve this problem. Using integer arithmetic this problem becomes: Solution: When solving problems with large integers, it is not always practical to rely on the number line. What is the difference between these two elevations?
The lowest elevation is Death Valley, which is 282 feet below sea level. McKinley, which is 20,320 feet above sea level. Problem: The highest elevation in North America is Mt. Using the number line below, the distance from +8 to 0 is 8, and the distance from 0 to -5 is 5, for a total of 13. Solution: We can solve this problem using integers. What is the difference between these temperatures? Problem: The temperature in Anchorage, Alaska was 8☏ in the morning and dropped to -5☏ in the evening. Learn About Subtracting Integers With The Following Integer Examples And Interactive Exercises
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