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: [256, -959, -549, -279, 507, 996, 31, -688, -125, -945, -276, 657]

[260, -960, -550, -280, 510, 1000, 30, -690, -120, -940, -280, 660]