A table generating apparatus includes a display unit and a processor which performs the following processes of: receiving an input of a function expression; receiving an input for setting a table range; generating a table representing a relation between a plurality of values in the range and their corresponding values determined by the function expression based on the table range, displaying the generated table on the display unit; receiving an input of an additional value while the table is displayed; adding the received additional value and its corresponding value determined by the function expression to the displayed table; and expanding the table by adding values obtained by subsequently changing the additional value and their corresponding values determined by the function expression to the displayed table, after the table addition function adds the additional value and its corresponding value to the table, each time an operation input is received.