Expressions vs Equations

Front

In the expression 5x - 3, what is 3?

Back

3 is a constant.

Front

What operation does 2x represent?

Back

2x represents multiplication.

Front

What is a term in mathematics?

Back

A term is numbers and letters separated by operations.

Front

What is a constant?

Back

A constant is a value that does not change.

Front

Which of the following is not a numerical expression: 13 + 7 - 25, 39/13, x - 2, 47 - 5(10) + 23?

Back

x - 2 is not a numerical expression.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operations without an equality sign.

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

What is a variable?

Back

A variable is a symbol, often a letter, that represents an unknown value.

Front

What is a coefficient?

Back

A coefficient is a number in front of a variable that indicates how many times to multiply the variable.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.