1/2 = 0.50 has a larger value than 0.09 or 0.35 (=35%).
The largest value is 1/2.
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Decimal numbers are compared left to right. Comparisons are made of digits having the same number place, so tenths are compared to tenths (for starters). Here, that means you're comparing 5 tenths to 0 tenths to 3 tenths. 5 wins.
