You could write 2 1/2 or 2.5.
Observe ===> 0.0025
2.5 mm
sixty-two and five tenths or sixty-two and one half
Two quarters is one half. In decimal form: 0.5
We write .5 or 0.5 as the decimal for one half.
32.5 cents, or $0.325
.25
We write two and a half as 2.5 in decimal form.
2 2/7 + 3 1/2
i think 2.5 cause its 2 AND [ my teacher told me that and means decimal] a half tenths
0.5 is one half in metric
"over half" is the same as two times.