Who has more stickers, you or your friend?

You have more stickers because 8 is a larger number than 5. Comparing quantities like this is one of the first ideas kids learn in math: lining numbers up in order (1, 2, 3, 4, 5, 6, 7, 8...) shows that any number that comes later in the count is bigger than one that comes earlier, so 8 stickers beats 5 stickers.

Your friend having more would only be true if their number were bigger than yours, and 'the same' would only be true if both piles had the identical count, like 5 and 5. Since 8 and 5 are different numbers and 8 comes after 5, neither of those other answers fits.

This kind of comparing is called 'more than' and 'less than,' and grown-ups use it constantly too, like comparing prices at a store or scores in a game.