Practice for the Dates and text unit. The sheet lists orders with the date placed, the date shipped, a customer name typed carelessly, and a code made of country, region and a number.
Each task asks for one answer in column F; most are filled down to F9. Decide whether the task is about dates (subtract, NETWORKDAYS, EOMONTH, TEXT) or text (TRIM, PROPER, LEFT, MID, FIND, SUBSTITUTE), then write it.