| Keyword | Definition |
|---|---|
| - | arithmetic operator which performs subtraction |
| * | arithmetic operator which performs mutliplication |
| / | arithmetic operator which performs division |
| + | arithmetic operator which performs addition |
| arithmetic operator | a mathematical operator which can perform addition, subtraction, division or multiplication |
| expression | values and or variables combined using operators or functions |
| function | named section of code which processes an input and returns an output. e.g. average(1,2,3) is a function which returns the average value (2) of the input (1, 2 and 3) |
| operator | a symbol that performs an operation such as > (greater than) or - (subtract) |
