Evaluating 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 variables with numbers and performing the operations.

Front

What is the order of operations?

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) - often abbreviated as PEMDAS.

Front

If p = -6, what does p + 4 equal?

Back

-2

Front

What is the value of 4 ⋅ 7 + 6² + 3?

Back

67

Front

How do you solve 2⁴ - 24 ÷ 3 + 1?

Back

The answer is 9.

Front

Evaluate the expression: Let g = 3 and h = 9; what is 4h + 2g + 4?

Back

46

Front

If x = -7, what does -2⋅x equal?

Back

14

Front

What is a variable in an expression?

Back

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

Front

What is a constant in mathematics?

Back

A constant is a fixed value that does not change, such as the number 5 or -3.