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Which point is exactly midway between ( \frac{2}{5} ) and ( \frac{3}{5} ) on the number line?

Answer and explanation

Correct answer: ( \frac{1}{2} )

The point exactly midway between two numbers is their arithmetic mean. For \(\frac25\) and \(\frac35\), add them and divide by 2: \(\frac{\frac25+\frac35}{2}=\frac{\frac55}{2}=\frac12\). Therefore the midpoint is \(\frac12\), so option A is correct.

This also makes sense geometrically. The two endpoints are 0.4 and 0.6 on the number line, and 0.5 is equally distant from each: the distance from 0.4 to 0.5 is 0.1, as is the distance from 0.5 to 0.6. The values \(\frac52\), \(\frac15\), and \(\frac45\) do not have equal distances from both endpoints.

Related tags

Number-LineMidpointFraction

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