John opened a new bank account and deposited a $215 check. Then he made a few withdraws of $40, $20, and $75 before he deposited one more check for $185. How much is now in John’s bank account?

To find how much is in John’s account now, begin with the original deposit. Withdraws are represented by negative integers and deposits are represented by positive integers. Add together all the amounts withdrawn and deposited.
215 + (−40) + (−75) + (−20) + 185
= 400 + (−135) = 265
Therefore, John has $265 in his account.