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 expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given 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 4, which is the number multiplied by the variable x.

Front

Evaluate the expression: 5h - 2 for h = 4.

Back

5(4) - 2 = 20 - 2 = 18.

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 3x + 5?

Back

The constant is 5, which is a fixed number that does not change.

Front

Evaluate the expression: 7h - 3 for h = 6.

Back

7(6) - 3 = 42 - 3 = 39.

Front

What does the term 'expression' mean in mathematics?

Back

An expression is a combination of numbers, variables, and operations without an equality sign.