Definition: In this task you will be given a list of integers. You should round each integer to the nearest tens place. That means you should round the number to the nearest multiple of 10.
Input: [-641, 546, 117, 411, -90, -969, -106, -791, 271, -789, 4, 443, -340]

[-640, 550, 120, 410, -90, -970, -110, -790, 270, -790, 0, 440, -340]