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

Back

85

Front

What is the first step in the order of operations?

Back

Multiplication and division are performed before addition and subtraction.

Front

Write an algebraic expression for '12 more than a number'.

Back

x + 12

Front

Back

16

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the order of operations?

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

Back

9

Front

What is a variable in an expression?

Back

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

Front

What is the result of multiplying before adding in the expression: 3 + 4 x 6 - 4?

Back

The first step is to multiply 4 x 6, which equals 24.