Writing and Evaluating Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

Evaluate the expression 4x + 3 when x = 2.

Back

The value is 11.

Front

What is a constant in an algebraic expression?

Back

A constant is a fixed value that does not change. For example, in the expression 5x + 7, the number 7 is a constant.

Front

Identify the coefficient in the expression 9y + 4.

Back

The coefficient is 9.

Front

How many terms are in the expression 3a + 2b - 5?

Back

There are 3 terms.

Front

Back

The value is 8.

Front

What is a variable in an algebraic expression?

Back

A variable is a symbol, often a letter, that represents an unknown value. For example, in the expression 2x + 3, x is a variable.

Front

Back

The value is 21.

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.