adding and subtracting integers

Word problems

100

Someone deposited 50 dollars and spent 20 dollars. What is integer?

Did you get 30?

200

Jack went scuba diving. he went 500 feet below sea level to find fish. What is the integer?

did you get -500?

300

The average temperature in Texas today is 90 degrees. What is the integer?  

did you get 90?

400

Someone went hiking on a mountain. They climbed up to 5000 feet but then went down 2678 feet. what is the integer? 

did you get positive 2322?

500

Jessica went to the empire state building. She recorded how many feet she was  above sea level when 1/4 of the way up. It was 700 feet. She also recorded the height that she was on when at the top of the tower. 6000 feet above sea level. What is the opposite value of the difference of the 2 numbers?  

Did you get -5300?

Vocab

100

What is a whole number

Whole numbers are positive integers (includes 0)

200

What is a rational number

A number that can be expressed from a decimal or a fraction to a integer.

300

What is a natural number?

The positive integers (only sometimes includes 0)

400

What is opposite value?

The opposite integer.

500

What is a absolute value?

It is the number of units away from ZERO (always positive numbers)

Adding integers

100

12+|-20|

34

200

78+(-23)

55

300

|-55|+(-30)

25

400

|78|+|23|

101

500

(-25550)+|-25550|+50000

50000

Subtracting integers

100

7878-|-83|

7795

200

|-8|-(-1)

9

300

|8|+(-17)

-9

400

7878-(-83)

7961

500

-2400-|-2400|-1200

-6000