7th Grade

Evaluate

100

Evaluate the expression when x = 5

2x+3

13

200

Evaluate the expression when a =-2

3a+7

1

300

Evaluate the expression where x =10

x/5+8

10

400

Evaluate the expression where x = -3

2(x+2)-4

-6

500

Evaluate the expression when n = 3

2n²-4n+1

7

Simplify

100

Simplify:

6(2x-3)+4x

16x-18

200

Simplify:

5x+2-3x+6

2x+8

300

Simplify:

3x+4x-7

7x-7

400

Simplify:

3(4x-1)-5x

7x-3

500

Simplify the expression

7(3x-2)+2x

23x-14

Write an Equation

100

A product of a number and 8 is 56

8x=56

200

A number is divided by 4 and the result is 3

x/4=3

300

The difference between a number and 7 is 12

x-7=12

400

The sum of a number and 9, then multiply the result by 4

x+9*4

500

one half of a number is subtracted from the number and the result is 10

x-1/2x=10

Properties

100

Add in any order

example: 2+4 = 4+2

communitaive property of addition

200

multiply in any order 

example: (2*4)5 = 2(4*5)

Associative property of muliplication

300

For every "a" there exists a (-a). opposites = 0

Existance of additive Inverse

400

Any number times one equals itself

Multiplicative identity property of 1

500

To muliply a number by a sum, first multiply the number by each addend. The add those together.

Distributive Property 

Solve

100

x+12=20

x=8

200

4x+8=24

x=4

300

3y-5=16

y=7

400

2(x-4)=10

x=9

500

2²-x(2+4)=28

x=-4