Mean and Absolute Value

John has saved money over the last 5 months. If he saved $4 in the first month, $8 in the second month, $12 in the third month, $16 in the fourth month, and $20 in the fifth month, what is the mean amount of money saved per month?

Find the absolute value of -15.

Calculate the mean of these numbers: 7, -2, 9, -4, 8.

What is the absolute value of 0?

Find the mean of the numbers: -5, -3, 0, 3, 5.

What is the absolute value of -22?

Calculate the mean of the following numbers: 10, 20, 30, 40, 50.

Find the absolute value of 7 - 10.

What is the mean of these numbers: 100, 200, 300, 400, 500?

Find the absolute value of the difference between -8 and 3.