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: [-290, -321, 320, -620, -766, 124, -787, -983, -450, 279, 546, 469, -243]

[-290, -320, 320, -620, -770, 120, -790, -980, -450, 280, 550, 470, -240]