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: [-21, 29, 362, -924, -389, 437, 576, -518, 565, 225, -658, -841, -571]

SOLUTION: [-20, 30, 360, -920, -390, 440, 580, -520, 560, 220, -660, -840, -570]

PROBLEM: [-302, 311, 962, -595]

SOLUTION: [-300, 310, 960, -600]

PROBLEM: [310, -260, 141, -777, 551, 770]

SOLUTION:
[310, -260, 140, -780, 550, 770]