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

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

Back

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

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: 4h - 2 for h = 3.

Back

4(3) - 2 = 12 - 2 = 10.

Front

What is the coefficient in the expression 5h?

Back

The coefficient is 5, which is the number multiplied by the variable h.

Front

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

Back

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

Front

What is a variable in algebra?

Back

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

Front

Evaluate the expression: h/2 + 1 for h = 8.

Back

8/2 + 1 = 4 + 1 = 5.

Front

What is a constant in an algebraic expression?

Back

A constant is a fixed value that does not change, like the number 4 in the expression 3h + 4.

Front

Evaluate the expression: 5h - 3 for h = 4.

Back

5(4) - 3 = 20 - 3 = 17.