You can use a simple formula to sum numbers in a range (a group of cells), but the SUM function is easier to use when you’re working with more than a few numbers. For example =SUM (A2:A6) is less likely to have typing errors than =A2+A3+A4+A5+A6.

COUNTIFS 函数语法具有以下参数：. criteria_range1 必需。. 在其中计算关联条件的第一个区域。. criteria1 必需。. 条件的形式为数字、表达式、单元格引用或文本，它定义了要计数的单元格范围。. 例如，条件可以表示为 32、">32"、B4、"apples"或 "32"。. criteria_range2 ...