Exploring Algebra Vocabulary with the CPM CC2 Toolkit

What is a variable in mathematics?

• A mathematical operation

• A letter or symbol representing one or more numbers

• A constant value

• A number that does not change

Which of the following is true about expressions?

• They do not contain an equal sign

• They always contain an equal sign

• They are always simplified

• They are solved like equations

What is the main difference between an expression and an equation?

• Equations contain an equal sign, expressions do not

• Expressions contain an equal sign, equations do not

• Expressions are always simplified, equations are not

• Equations are always simplified, expressions are not

What separates terms in a mathematical expression?

• Parentheses

• Addition and subtraction

• Exponents

• Multiplication and division

What should you do when simplifying terms?

• Only simplify multiplication

• Continue until you reach the simplest form

• Stop after the first step

• Only simplify addition

What is a coefficient?

• A number that is not multiplied by a variable

• A symbol used in equations

• A letter that represents a number

• A number part of the term before the variable

Which of the following is a constant?

• 2x

• 17y

• 8

• 5z

What does the term 'variable' imply?

• It is a fixed number

• It can change

• It is always a letter

• It is always a number

What are factors in a multiplication expression?

• Numbers subtracted from each other

• Numbers divided by each other

• Numbers added together

• Numbers multiplied together

In the expression 3(5 - 2x), what are the factors?

• 3 and 5

• 3 and (5 - 2x)

• 3 and 2x

• 5 and 2x