Expressions Vocabulary

Front

What is a letter used to represent a number value in an expression or an equation?

Back

variable

Front

What is the Commutative property in mathematics?

Back

The Commutative property states that the order of addition or multiplication does not change the result. For example, a + b = b + a and ab = ba.

Front

How many terms are in the expression 3x + 5y - 17 - 2y + x?

Back

5

Front

What is a combination of numbers, operations, and variables which can be evaluated for a given value of the variables?

Back

expression

Front

In the expression 8r - 3, what is the variable?

Back

r

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of the variables.

Front

What is the Associative property in mathematics?

Back

The Associative property states that the way in which numbers are grouped in addition or multiplication does not change the result. For example, (a + b) + c = a + (b + c) and (ab)c = a(bc).

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as the number 5 in the expression 3x + 5.