When you take a child's temperature under the arm, do you just add a degree?

Kids temperature: Under arm temp is never reliable. Only strictly use rectal temp for kids (they are too young to protest!). Older kids can use buccal thermometer. When you take the temp, please always take many times daily as the temp is always higher at night when anybody has a high temperature. And please write down all the temps taken to bring to your doctor. Never tell the doc : i did not take my temp".