2. According to the requirements of the topic, enter relevant data in the worksheet.

According to the requirements of the topic, use basic mathematical operators (such as plus sign, minus sign, multiplication sign and division sign) to calculate. For example, if the topic requires calculating the sum of two numbers, you can enter "=A 1+B 1" in the corresponding cell, where A 1 and B 1 are the cells where the two numbers to be added are located.