I&#x27;m not quite sure what you&#x27;re asking, but one way that fractions (and by extension, ratios) are tricky is that a larger denominator gives a smaller value. Five is greater than three but a fifth is smaller then a third. I&#x27;ve seen my children struggling with this.<p><i>&quot;It&#x27;s an error so common that I imagine it must be named by now.&quot;</i><p>Not really an error so much as an attempt to mislead.