| Subject | English | Welsh |
| comp., MS | Boolean expression | mynegiad Boole (An expression that yields a Boolean value (true or false). Such expressions can involve comparisons (testing values for equality or, for non-Boolean values, the < [less than] or > [greater than] relation) and logical combination (using Boolean operators such as AND, OR, and XOR) of Boolean expressions) |
| comp., MS | conditional expression | mynegiad amodol (An expression that yields a Boolean value (true or false). Such expressions can involve comparisons (testing values for equality or, for non-Boolean values, the < [less than] or > [greater than] relation) and logical combination (using Boolean operators such as AND, OR, and XOR) of Boolean expressions) |
| comp., MS | linear expression | mynegiad llinol (An option that changes a 2-dimensional linear expression, such as 5^2, to a built-up (3-dimensional) format) |
| comp., MS | numeric expression | mynegiad rhifol (Any expression that evaluates to a number. The expression can be any combination of variables, constants, functions, and operators) |