Operations with Integers

Absolute Value

100

|8|

8

200

|-7|

7

300

|4| - |-3|

1

400

|-8| - |-5|

3

500

|6| - |-10|

-4

Adding Integers

100

Add the integers 

6+(-4)

2

200

Add the integers

-3 + 2 +( -5)

-6

300

Add the integers

-5+( -6 )+3

-8

400

Add the integers

-12 + (-4) +( -3)

-19

500

Add the integers

-20 + 3 + (-2 )

-19

Subtracting Integers

100

Subtract the integers

7-10

-3

200

Subtract the integers

-5-7

-12

300

Subtract the integers

6-(-4)

10

400

Subtract the integers

-9 - 4 - (-2)

-11

500

Subtract the integers

-4 - (-6) - 2 

0

Multiplying Integers

100

Multiply the integers

(-3)·(2)

-6

200

Multiply the integers

(3)·(-6) 

-18

300

(-7)·(-7)

49

400

(-7)·(-6)·(-1)

-42

500

Multiply the integers

(-2)·(-2)·(-7)

-28

Dividing Integers

100

Divide the integers

-15 ÷ 3

-5

200

Divide the integers

-28 ÷ 7

-4

300

Divide the integers

-48 ÷( -6)

8

400

Divide the integers

-12 ÷( -1)

12

500

Divide the integers

-56 ÷ 7

-8

Mixed Operations

100

Add and Subtract integers

-3 + 6 - 3

0

200

Add and Subtract integers

-3 + 6 - (-3) + 10

16

300

Multiply integers

(-3)·(-3)·(-1)

-9

400

-2 - (-2) + 2

2

500

-5 ·(-5) ÷ 5

5

Word Problems

100

When I woke up this morning the temperature was 2 degrees below zero. The temperature rose 18 degrees. What temperature is it now? Write an expression for this situation, solve, and explain.

-2+18

16 degrees

The temperature is now 16 degrees.

200

Last weekend I went caving in North Georgia. We repelled down 15 feet into the cave. Then I saw a crystal and repelled 25 feet down to get it. What is the crystal's location? Write an expression for this situation, solve, and explain.

-15 + -25

-40 feet

The crystal is 40 feet down into the cave.

300

Douglas the boxer went to Doggy Daycare 4 times this week. I spent a total of $28. How much did I spend each day? Write an expression for this situation, solve, and explain.

-28/4

- $7

You spend $7 each day for Doggy Daycare.

400

Temperatures have been dropping steadily at 3 degrees each day. How much has the temperature changed after 7 days?

-3x7

-21 degrees

The temperature has dropped 21 degrees total after 7 days.

500

Charlie has been trying to lower his golf score.  In the first round he shot 2 below par. In the second round he shot 3 below par. What is his total score after two rounds? Write an expression for this situation, solve, and explain.

-2 + -3

-5

Charlie's score is 5 below par after two rounds.