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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*8 | ✓ |
| (9+12)^3 -4* 7 | ✓ |
| 3/7 + [(5-1)* (7+ 4)]^5 - 1/7 | ✓ |
| 9w^2+4s+7 | * |
| 1125 | * |
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.