Algebra Quiz

What is a "variable"?

• a number at the end of an expression

• a letter that stands for a unknown number

• numbers and symbols

• a symbol

What is an "expression"?

• a number sentence that contains a variable

• a phrase

• a sentence made of numbers

• something that you can solve

What is the algebraic expression for: "the sum of n and 9"

• n-9

• n/9

• n+9

• 9n

What is the algebraic expression for: "the product of 34 and z "

• 34/z

• z x 34

• z/34

• z+34

What is the algebraic expression for: "take 10 away from s"

• 10-s

• s+10

• 10/s

• s-10

7 divided by c

Simplify this expression: d+2d-3

• 1d-3

• 1d-2

• 2d-3d

• 3d-3

Simplify this expression: 3x+4-2

• 3x+2

• 3x+6

• 3x-2

• 3x

Simplify this expression: 5y-2+y-8

Answer explanation

Remember you are combining like terms. Following the rules of PEMDAS will not help you in this situation.

x=2, solve.

2x