Evaluate Expressions

Front

What is the process of evaluating an expression?

Back

Evaluating an expression involves substituting the values of variables into the expression and performing the necessary arithmetic operations to simplify it to a single numerical value.

Front

How do you evaluate the expression 4y - 5 when y = 6?

Back

Substitute 6 for y: 4(6) - 5 = 24 - 5 = 19.

Front

What is the value of the expression 2q + 3 when q = 5?

Back

Substitute 5 for q: 2(5) + 3 = 10 + 3 = 13.

Front

How do you simplify the expression 4(t - 2) + 3 when t = 10?

Back

Substitute 10 for t: 4(10 - 2) + 3 = 4(8) + 3 = 32 + 3 = 35.

Front

What does the expression r(r - 9) represent when r = 11?

Back

Substitute 11 for r: 11(11 - 9) = 11(2) = 22.

Front

How do you evaluate the expression (s - 5)² when s = 13?

Back

Substitute 13 for s: (13 - 5)² = (8)² = 64.

Front

What is the importance of parentheses in evaluating expressions?

Back

Parentheses indicate the order of operations, ensuring that the operations within them are performed first before any other operations.

Front

What is the order of operations used in evaluating expressions?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

What is a variable in the context of algebraic expressions?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.

Front

What is an expression in mathematics?

Back

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