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: [263, 355, -412, 29, -490, -812, -869, -313, -118, -766, -547, 822, -407, -996, 270]

[260, 360, -410, 30, -490, -810, -870, -310, -120, -770, -550, 820, -410, -1000, 270]