Midpoint of two numbers

 

Finding the midpoint of two numbers comes up in the AQE test from time to time, and is actually an important skill in “big school” when finding the median of an even numbered set of data or when finding the coordinates of the midpoint of a line.

 

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[Answers:
a=4, b=6, c=8,
d=16, e=20, f=44,
g=20, h=49, i=67,
j=2.5, k=24.5, l=70,
m=74, n=44.5, o=49.5]