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: [339, 732, 608, 322, -488, 930, -874, 632, 1000, -140, -913, -19]

[340, 730, 610, 320, -490, 930, -870, 630, 1000, -140, -910, -20]