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: [-712, 47, -909, 609, 729, -339]

SOLUTION: [-710, 50, -910, 610, 730, -340]

PROBLEM: [334, 637, 621, -633, -176, -669, 310, -834, 653, 307]

SOLUTION: [330, 640, 620, -630, -180, -670, 310, -830, 650, 310]

PROBLEM: [-265, 521, -49, -559, -508, -954, 533, 375, -383, -139, 442, -775]

SOLUTION:
[-260, 520, -50, -560, -510, -950, 530, 380, -380, -140, 440, -780]