Intro to Alg. Pretest with vocab

What are variables in math?

• Letters

• Numbers

• Expressions

A value that does not change.

• term

• solution

• variable

• constant

A variable represents what is ______________. 

• the answer
• the operation
• the difference
• unknown 

5p + 4h - 2
Which are the variables? 

• 5p, 4h, 2
• 2
• p, h
• 5, 4

• negative

• positive

Simplify: -2(9-6y)

• -18+12y

• 7-8y

• -18-6y

• -6y

Frank made 20 cookies. He gave 5 of them to his mom. How many cookies does Frank have left?

• 5 cookies

• 20 cookies

• 15 cookies

• 0 cookies

Simplify by combining like terms:

5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Simplify: 2(4 + 9w)

• 8+9w

• 2+9

• 8+18w

• 2+9w

• -16x+28y-20

• -8x-28y-20

• 12xy-20

• -16x-28y+20