Expressions Review

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

What is the greatest common factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the GCF of 16 and 24?

Back

The GCF of 16 and 24 is 8.

Front

What is a variable in an expression?

Back

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

Front

What does the expression x + 15 represent?

Back

It represents a quantity that is 15 more than the value of x.

Front

How do you simplify the expression (x - 6)4?

Back

You distribute 4 to both terms: 4x - 24.

Front

What is the value of the expression 5a + b when a = 6 and b = 3?

Back

The value is 33.

Front

What does the expression 21h mean in a real-world context?

Back

It means earning 21 dollars for each hour worked.

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.