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: [439, -790, -100, -550, 691, 159, 489, -667, 743, -768, 317, -784]

[440, -790, -100, -550, 690, 160, 490, -670, 740, -770, 320, -780]