A numeric expression, or numerical expression, is a sequence of mathematical operations that only involves numbers. Consider the following examples.

Example	Is It a Numeric Expression?
$5+3-2\cdot 8$	$✓$
$(9+12{)}^3-4\cdot 7$	$✓$
$\frac{3}{7}+{\left[(5-1)\cdot (7+4)\right]}^5-\frac{1}{7}$	$✓$
$9w^2+4s+7$	$\times$
$1125$	$\times$

The first examples have operations that only involve numbers. On the other hand, the fourth example is not a numeric expression because it has variables, which makes it an algebraic expression. The final example does not have any operations at all — it is just a single number. This means that the example is not an expression.