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

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?

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). This is often remembered by the acronym PEMDAS.

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.

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 value of 5^3?

Back

125

Front

How do you write an expression for the total cost of downloading 'g' games if each game costs $0.99 and there is a $12.49 membership fee?

Back

0.99g + 12.49

Front

What is the result of (4 + 5) ÷ 3 x 6 - 6?

Back

12

Front

If b = 4 and c = 5, what is the value of bc + b - c?

Back

19

Front

Evaluate the expression np for n = 2 and p = 7.

Back

14