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: [-550, 696, -605, 675, 374, 320, 792, -894, 768, -309]

[-550, 700, -600, 680, 370, 320, 790, -890, 770, -310]