pre-algebra review

One Step equations

100

Solve for x:

5 + x = 15

x=10

200

Solve for x:

x - 20 = 63

x = 83

300

Solve for x:

15x = -180

x = -12

400

Solve for x:

x/-57 = -13

x = 741

500

Solve for x:

x/13 = -16

x = -208

Combine like terms

100

2x + 3 + 5x

7x + 3

200

y + x + 3x + 3y

4x + 4y

300

4d + 5c + 5 + 5c

10c + 4d + 5

400

3c² - 6 + 3 + c²

4c² + 9

500

4x + x² + 7x² + 5y

 8x² + 4x + 5y

Adding integers

100

-10 + (-3)

-13

200

-8 + 15

7

300

-15 + (-22)

-37

400

14 + (-25) + 6

-5

500

-5 + 12 + (-9)

-2

Subtracting integers

100

10 - (-5)

15

200

To solve a subtraction problem you can "Keep, ____, ____."

Change, change

300

-12-8

-20

400

3000 - (-250)

3,250

500

-15 - (-20) - 12

-7