Evaluating Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables (like h), and operations (like addition, subtraction, multiplication, and division).

Front

What does it mean to evaluate an algebraic expression?

Back

To evaluate an algebraic expression means to find its value by substituting the variables with specific numbers.

Front

Evaluate the expression: 2h + 3 for h = 5.

Back

2(5) + 3 = 10 + 3 = 13.

Front

What is the coefficient in the expression 4x + 7?

Back

The coefficient is the number in front of the variable, so in 4x, the coefficient is 4.

Front

Evaluate the expression: 5h - 2 for h = 3.

Back

5(3) - 2 = 15 - 2 = 13.

Front

What is a variable in an algebraic expression?

Back

A variable is a symbol (like x or h) that represents an unknown number.

Front

Evaluate the expression: 3h + 4 for h = 2.

Back

3(2) + 4 = 6 + 4 = 10.

Front

What is the constant in the expression 3h + 5?

Back

The constant is the number that does not change, so in 3h + 5, the constant is 5.

Front

Evaluate the expression: 7h - 1 for h = 4.

Back

7(4) - 1 = 28 - 1 = 27.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign, while an equation does.