You get a half when you split a whole into twos, it is a fraction. It can be represented as 1 2 {\displaystyle \frac{1}{2}} . In decimal, it is 0.5 {\displaystyle 0.5} . So if two halves make a whole, then 1 2 + 1 2 = 1 {\displaystyle \frac {1}{2} + \frac {1}{2} = 1} , and 1 2 + 2 2 = 1 1 2 {\displaystyle \frac {1}{2}+\frac {2}{2} = 1 \frac {1}{2} } or 3 2 {\displaystyle \frac{3}{2}} .
