TASK 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.
PROBLEM: [-388, -589, -749, -392, 649, 23, -959, -186, 948, -118, 700, 912, -23, -1000, 512]

SOLUTION: [-390, -590, -750, -390, 650, 20, -960, -190, 950, -120, 700, 910, -20, -1000, 510]

PROBLEM: [-299, -981, -161, 781, -551, -567, 717, 418, 482, 365, 621, -596, 806]

SOLUTION: [-300, -980, -160, 780, -550, -570, 720, 420, 480, 360, 620, -600, 810]

PROBLEM: [-121, 90, 898]

SOLUTION:
[-120, 90, 900]