Question

How do you calculate the number in the middle of 11 and 24?

Answer 1

The difference is `24-11=13`

Explanation:

`11,12,13,14,15,16,17,18,19,20,21,22,23,24`

There's no real middle number (`17and18` share the middle), so we take the mean of `11and24or 17and18`:

`(11+24)/2=(17+18)/2=17.5`

Answer 2

`((11+24))/2 = 35/2 = 17 1/2 = 17.5`

Explanation:

To find a central value, simply average the two values, which means add them together and divide by `2`

`((11+24))/2 = 35/2 = 17 1/2 = 17.5`

This has many applications in maths:

• Finding the average between two ages, two tests, etc.
• Finding the midpoint of a line: `M("ave of x's","ave of y's")`
• Finding the median of an even number of values.
• Finding the line of symmetry from the `x` intercepts of a parabola
• Finding a fraction exactly halfway between two given fractions.
• Finding the midpoint of a class interval in statistics.

It is the same concept every time: Average the two values to find the one exactly midway between them.