Expression or Equation???

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value but does not include an equality sign.

Front

What is an equation in mathematics?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equality sign (=).

Front

Give an example of a mathematical expression.

Back

34 - 15 is an example of a mathematical expression.

Front

Give an example of a mathematical equation.

Back

34 - 15 = 19 is an example of a mathematical equation.

Front

What is the difference between an expression and an equation?

Back

The main difference is that an expression does not have an equality sign, while an equation does.

Front

What does the term 'evaluate' mean in the context of expressions?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers and performing the operations.

Front

What is the role of variables in expressions?

Back

Variables represent unknown values and can change, allowing expressions to represent a range of values.

Front

What is the significance of the equality sign in an equation?

Back

The equality sign indicates that the two sides of the equation have the same value.

Front

Can an expression be simplified? If so, how?

Back

Yes, an expression can be simplified by combining like terms and performing operations to reduce it to a simpler form.

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression, such as the 4 in 4x.