Evaluate Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) 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 the variables with their given values.

Front

If x = 3 and y = 5, what is the value of x + y?

Back

8

Front

Evaluate the expression 2q + 3 when q = 5.

Back

13

Front

What is the value of 3x + 8 when x = 2?

Back

14

Front

Evaluate 8a - b when a = 10 and b = 6.

Back

74

Front

What is the result of evaluating 2(a - 5) + 2 when a = 15?

Back

22

Front

What is a variable in an expression?

Back

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

Front

What is the order of operations in mathematics?

Back

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

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.