How many stamps has Jane collected per month on average if she collected 132 stamps in a year?

To find the average number of stamps Jane collected per month, you can start by recognizing that there are 12 months in a year. To calculate the average monthly stamp collection, you would divide the total number of stamps collected in the year by the number of months.

In this case, Jane collected a total of 132 stamps in one year. By dividing 132 by 12, you calculate the average as follows:

132 stamps ÷ 12 months = 11 stamps per month.

This result indicates that on average, Jane collected 11 stamps each month over the course of the year. Therefore, the correct choice is that Jane has collected an average of 11 stamps per month.