WRITING AND EVALUATING EXPRESSIONS

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

Front

What does the variable 'm' represent in an expression?

Back

In an expression, 'm' typically represents a variable that can take on different values. It is often used to denote an unknown quantity.

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the operations according to the order of operations.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that dictates the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What is the expression for '5 more than x'?

Back

The expression for '5 more than x' is x + 5.

Front

If x = 2, what is the value of 3x + 4?

Back

If x = 2, then 3x + 4 = 3(2) + 4 = 6 + 4 = 10.

Front

What does the expression 45m + 20 represent?

Back

The expression 45m + 20 represents a total cost where 45 is the monthly charge per month (m) and 20 is a one-time activation fee.

Front

How do you write an expression for 'twice a number decreased by 7'?

Back

The expression for 'twice a number decreased by 7' is 2x - 7, where x is the number.

Front

What is the value of the expression 5 + 4x when x = 10?

Back

When x = 10, the value of the expression 5 + 4x is 5 + 4(10) = 5 + 40 = 45.

Front

What is the expression for 'the total cost of bowling n games with a shoe rental fee of 2'?

Back

The expression is 5n + 2, where 5 is the cost per game and 2 is the shoe rental fee.