Integer Review

Adding Integers

100

-5+-7=

-12

200

-8+6=

2

300

9+-2=

7

400

10+-4=

6

500

What are the rules of Addition?

If the signs are the same add and put the given sign.

If the signs are different SUBTRACT and chose the sign of the number further away from zero on the number line.

Subtracting Integers

100

5 - -3=

8

200

-5-3=

-8

300

-9-9=

0

400

5 - -4=

9

500

What does ATO mean in a subtraction problem?

It is the first step in a subtraction problem.  It means to change the equation. Make it Addition and change the integer after the addition sign to positive.

Add To the Opposite.  

Multiplying Integers

100

-7 x -9 =

63

200

8 x -9 =

-72

300

12 x 8 =

96

400

-10 x 0 =

0

500

What are the rules?

pos X pos =

neg x neg =

neg X pos=

pos X neg =

pos

pos

neg 

neg

Dividing Integers

100

12÷-2 =

-6

200

14÷-7=

-2

300

-10÷-5=

2

400

20÷1=

20

500

What are the rules of division?

pos + pos = 

neg ÷ neg = 

pos ÷ neg = 

neg ÷ pos = 

pos

pos

neg

neg

Algebra Equations

100

Solve for x

5+x=12

x=7

200

Solve for x

6-x=2

x=4

300

Solve for x

7x=49

x=7

400

Solve for x

144 ÷ x= 12

x=12

500

Solve for x

(5 + X)5=35

x=2