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: [398, 290, 926, -7, 535, 942, -489, -583, 56, 1000]

[400, 290, 930, -10, 540, 940, -490, -580, 60, 1000]