Answer: 5/8 < 3/8
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Reason:
The denominators are both 8, so we can compare the numerators.
The statement 5 < 3 is false, so 5/8 < 3/8 is also false.
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Or you could use your calculator to see that:
Since 0.625 < 0.375 is false, this makes 5/8 < 3/8 to be false