MS Excel: Add a Row or Column Easily

In Excel, the easiest way to insert or delete entire rows or columns is to use keyboard shortcuts: [Ctrl]+ and [Ctrl]-.
Drag across the row numbers or column letters in the worksheet frame to select the number of rows or columns you want to insert.
Then, you press [Ctrl]+ (use the plus sign on the numeric keypad) to insert entire rows or columns at that spot. You press [Ctrl]- to delete entire rows or columns.