How many integers have absolute value not less than 5 and not more than 10? What is the sum of these integers?

How many integers have absolute value not less than 5 and not more than 10? What is the sum of these integers?

They are positive and negative 5, 6, 7, 8, 9 and 10 respectively. That is to say, there are 12. The positive and negative are all offset, so the sum is zero