Answer:
If something is more than 5 you round up to the nearest 10 number, if it's less than 4 you round down to the nearest 10 number
Examples:
5 - round up to 10
45 - round up to 50
67 - round up to 80
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44 - round down to 40
42 - round down to 40
91 - round down to 90
See where this is going?
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