Activities

1. At a football game the quarterback threw the football and the receiver caught it for a 12 yard gain.  What integer represents the yards gained?

2. You went to the bank and took out $50 dollars from your checking account.  What integer represents the money withdrawn from your account?

3. At the local swimming pool a lifeguard can dive into the deep end and touch the bottom.  If the deep end is 10 feet deep what integer describes how far below the pool’s water level he can dive.

4. You are looking at the thermometer during a summer day and it reads 85°F above zero.  What integer represents the temperature for the day?

5. Below is a chart of some of the record lowest temperatures in certain states.                           

What state has the highest record low temperature according to the chart?

The median is the middle value when you list numbers in order from least to greatest.  What is the median temperature of the states listed in the chart?

6. A bird is flying 20 feet above sea level.  What integer represents how high the bird is flying and what would zero represent in this situation?

7. The lowest point in the Potomac River is 1 foot above sea level.  The lowest point of the Delaware River is sea level. The lowest point of the Colorado River is 70 feet above sea level. Represent each as an integer and write the names of the rivers in order from the least elevation to the greatest elevation.

8. A) Write a situation that contains at least 4 keywords for integers.  Make sure to include at least one positive and one negative integer in your word problem. 

       B) Identify the keywords used and what integer they represent.   

Answer Key/Rubric

1. +12
   
   
2. -50
   
   
3. -10
   
   
4. +85

5. Texas has the highest record low.

       Median is -39

6. +20 feet and zero in this situation represent the sea level.
   
   
7. Delaware River, 0; Potomac River, +1; and the Colorado River, +70

8. Acceptable answers might include, but are not limited to:

• Some keywords that could be used are above sea level, below sea level, at sea level, gain, loss, positive, negative, income, salary, expenses, costs, buys, pays, or profit.
• Example story:
  Henry decided to open a savings account at the bank.  He started by depositing seventy five dollars.  Two weeks later, the bank credited his account ten dollars for making honor roll at school.  Then, he withdrew $25 to buy an ITunes card.  At the end of the month the bank debited his account three dollars for maintenance fees.
• This example uses the following words

• Deposit; +75
• Credited; +10
• Withdrew; -25
• Debited; -3