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: [-274, 255, -257, -829, -405, 234, -581, 657, -310, -13]

[-270, 260, -260, -830, -400, 230, -580, 660, -310, -10]