Evaluating Expressions Pretest

Front

Evaluate b + 4 when b = 23.

Back

27

Front

Evaluate b^2 + 4 when b = 3.

Back

13

Front

Back

17

Front

Back

y = 4

Front

How many terms are in the expression: 3a + 2b + c + 100?

Back

4

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is a variable in mathematics?

Back

A variable is a symbol (like x or y) that represents an unknown value.

Front

What is the solution to an equation?

Back

The solution to an equation is the value of the variable that makes the equation true.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.