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 value of the expression 4h when h = 2?

Back

4(2) = 8.

Front

If h = 10, what is the value of 5h - 2?

Back

5(10) - 2 = 50 - 2 = 48.

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown number.

Front

What is the coefficient in the expression 7h?

Back

The coefficient is 7, which is the number multiplied by the variable h.

Front

Evaluate the expression: 3h + 4 for h = 1.

Back

3(1) + 4 = 3 + 4 = 7.

Front

What is the constant in the expression 2h + 5?

Back

The constant is 5, which does not change regardless of the value of h.

Front

Evaluate the expression: h/2 + 6 for h = 8.

Back

8/2 + 6 = 4 + 6 = 10.