You can add a 0 to the stem number to understand what value it conveys.
Sometimes, a stem plot will be used to separate numbers with decimals. For example, instead of the stem value being 80+3, it would be 8. 0+3, making for a total of 8. 3. Reading the plot key should tell you the place values of all the data.
Numbers in the stem column can contain multiple digits as long as the values in the leaf column are all single digits.