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: [-387, 689, -489, -260, -499, 272, -145, 480, 649, 51, -254, 988, 976]

[-390, 690, -490, -260, -500, 270, -140, 480, 650, 50, -250, 990, 980]