Evaluate Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, ×, ÷) 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 given numbers.

Front

If a = 4, what is the value of a x 7?

Back

28

Front

If a = 4, what is the value of a x a - 10?

Back

6

Front

If b = 9, what is the value of b + 30 / 6?

Back

14

Front

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

Back

14

Front

If v = 4, what is the value of 5(v + 1)?

Back

25

Front

What is the order of operations in mathematics?

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 an expression?

Back

A variable is a symbol (like x or a) that represents an unknown value in an expression.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.