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: [335, -393, 101, 799, -31, -26, 284, -154, -855, -908, -608, -789]

[340, -390, 100, 800, -30, -30, 280, -150, -860, -910, -610, -790]